diff --git a/services/cdn/api_default.go b/services/cdn/api_default.go
index 8c3063973..b0f0d6e43 100644
--- a/services/cdn/api_default.go
+++ b/services/cdn/api_default.go
@@ -390,7 +390,7 @@ type ApiListDistributionsRequest interface {
 	PageSize(pageSize int32) ApiListDistributionsRequest
 	// Identifier is returned by the previous response and is used to request the next page.  As the `pageIdentifier` encodes an element, inserts during pagination will *not* shift the result. So a scenario like:   - Start listing first page - Insert new element - Start listing second page will *never* result in an element from the first page to get \"pushed\" to the second page, like it could  occur with basic limit + offset pagination.  The identifier should be treated as an opaque string and never modified. Only pass values returned by the API.
 	PageIdentifier(pageIdentifier string) ApiListDistributionsRequest
-	// The following sort options exist. We default to `createdAt` - `id` - Sort by distribution ID using String comparison - `updatedAt` - Sort by when the distribution configuration was last modified,    for example by changing the regions or response headers - `createdAt` - Sort by when the distribution was initially created. - `originUrl` - Sort by originURL using String comparison - `status` - Sort by distribution status, using String comparison
+	// The following sort options exist. We default to `createdAt` - `id` - Sort by distribution ID using String comparison - `updatedAt` - Sort by when the distribution configuration was last modified,    for example by changing the regions or response headers - `createdAt` - Sort by when the distribution was initially created. - `originUrl` - Sort by originURL using String comparison - `status` - Sort by distribution status, using String comparison - `originUrlRelated` - The origin URL is segmented and reversed before sorting. E.g. `www.example.com` is converted to `com.example.www` for sorting. This way, distributions pointing to the same domain trees are grouped next to each other.
 	SortBy(sortBy string) ApiListDistributionsRequest
 	SortOrder(sortOrder string) ApiListDistributionsRequest
 	Execute() (*ListDistributionsResponse, error)
@@ -2159,7 +2159,7 @@ func (r ListDistributionsRequest) PageIdentifier(pageIdentifier string) ApiListD
 	return r
 }
 
-// The following sort options exist. We default to `createdAt` - `id` - Sort by distribution ID using String comparison - `updatedAt` - Sort by when the distribution configuration was last modified,    for example by changing the regions or response headers - `createdAt` - Sort by when the distribution was initially created. - `originUrl` - Sort by originURL using String comparison - `status` - Sort by distribution status, using String comparison
+// The following sort options exist. We default to `createdAt` - `id` - Sort by distribution ID using String comparison - `updatedAt` - Sort by when the distribution configuration was last modified,    for example by changing the regions or response headers - `createdAt` - Sort by when the distribution was initially created. - `originUrl` - Sort by originURL using String comparison - `status` - Sort by distribution status, using String comparison - `originUrlRelated` - The origin URL is segmented and reversed before sorting. E.g. `www.example.com` is converted to `com.example.www` for sorting. This way, distributions pointing to the same domain trees are grouped next to each other.
 
 func (r ListDistributionsRequest) SortBy(sortBy string) ApiListDistributionsRequest {
 	r.sortBy = &sortBy
diff --git a/services/cdn/model_config.go b/services/cdn/model_config.go
index 59efb6eb9..faea4e119 100644
--- a/services/cdn/model_config.go
+++ b/services/cdn/model_config.go
@@ -77,6 +77,31 @@ func setConfigGetBlockedIPsAttributeType(arg *ConfigGetBlockedIPsAttributeType,
 	*arg = &val
 }
 
+/*
+	types and functions for defaultCacheDuration
+*/
+
+// isNullableString
+type ConfigGetDefaultCacheDurationAttributeType = *NullableString
+
+func getConfigGetDefaultCacheDurationAttributeTypeOk(arg ConfigGetDefaultCacheDurationAttributeType) (ret ConfigGetDefaultCacheDurationRetType, ok bool) {
+	if arg == nil {
+		return nil, false
+	}
+	return arg.Get(), true
+}
+
+func setConfigGetDefaultCacheDurationAttributeType(arg *ConfigGetDefaultCacheDurationAttributeType, val ConfigGetDefaultCacheDurationRetType) {
+	if IsNil(*arg) {
+		*arg = NewNullableString(val)
+	} else {
+		(*arg).Set(val)
+	}
+}
+
+type ConfigGetDefaultCacheDurationArgType = *string
+type ConfigGetDefaultCacheDurationRetType = *string
+
 /*
 	types and functions for monthlyLimitBytes
 */
@@ -140,18 +165,20 @@ func setConfigGetRegionsAttributeType(arg *ConfigGetRegionsAttributeType, val Co
 // Config struct for Config
 type Config struct {
 	// REQUIRED
-	Backend ConfigGetBackendAttributeType `json:"backend"`
+	Backend ConfigGetBackendAttributeType `json:"backend" required:"true"`
 	// Restricts access to your content based on country.  We use the ISO 3166-1 alpha-2 standard for country codes (e.g., DE, ES, GB).  This setting blocks users from the specified countries.
 	// REQUIRED
-	BlockedCountries ConfigGetBlockedCountriesAttributeType `json:"blockedCountries"`
+	BlockedCountries ConfigGetBlockedCountriesAttributeType `json:"blockedCountries" required:"true"`
 	// Restricts access to your content by specifying a list of blocked IPv4 addresses.  This feature enhances security and privacy by preventing these addresses from accessing your distribution.
 	// REQUIRED
-	BlockedIPs ConfigGetBlockedIPsAttributeType `json:"blockedIPs"`
+	BlockedIPs ConfigGetBlockedIPsAttributeType `json:"blockedIPs" required:"true"`
+	// Sets the default cache duration for the distribution.  The default cache duration is applied when a 'Cache-Control' header is not presented in the origin's response. We use ISO8601 duration format for cache duration (e.g. P1DT2H30M)
+	DefaultCacheDuration ConfigGetDefaultCacheDurationAttributeType `json:"defaultCacheDuration,omitempty"`
 	// Sets the monthly limit of bandwidth in bytes that the pullzone is allowed to use.
 	MonthlyLimitBytes ConfigGetMonthlyLimitBytesAttributeType `json:"monthlyLimitBytes,omitempty"`
 	Optimizer         ConfigGetOptimizerAttributeType         `json:"optimizer,omitempty"`
 	// REQUIRED
-	Regions ConfigGetRegionsAttributeType `json:"regions"`
+	Regions ConfigGetRegionsAttributeType `json:"regions" required:"true"`
 }
 
 type _Config Config
@@ -228,6 +255,40 @@ func (o *Config) SetBlockedIPs(v ConfigGetBlockedIPsRetType) {
 	setConfigGetBlockedIPsAttributeType(&o.BlockedIPs, v)
 }
 
+// GetDefaultCacheDuration returns the DefaultCacheDuration field value if set, zero value otherwise (both if not set or set to explicit null).
+func (o *Config) GetDefaultCacheDuration() (res ConfigGetDefaultCacheDurationRetType) {
+	res, _ = o.GetDefaultCacheDurationOk()
+	return
+}
+
+// GetDefaultCacheDurationOk returns a tuple with the DefaultCacheDuration field value if set, nil otherwise
+// and a boolean to check if the value has been set.
+// NOTE: If the value is an explicit nil, `nil, true` will be returned
+func (o *Config) GetDefaultCacheDurationOk() (ret ConfigGetDefaultCacheDurationRetType, ok bool) {
+	return getConfigGetDefaultCacheDurationAttributeTypeOk(o.DefaultCacheDuration)
+}
+
+// HasDefaultCacheDuration returns a boolean if a field has been set.
+func (o *Config) HasDefaultCacheDuration() bool {
+	_, ok := o.GetDefaultCacheDurationOk()
+	return ok
+}
+
+// SetDefaultCacheDuration gets a reference to the given string and assigns it to the DefaultCacheDuration field.
+func (o *Config) SetDefaultCacheDuration(v ConfigGetDefaultCacheDurationRetType) {
+	setConfigGetDefaultCacheDurationAttributeType(&o.DefaultCacheDuration, v)
+}
+
+// SetDefaultCacheDurationNil sets the value for DefaultCacheDuration to be an explicit nil
+func (o *Config) SetDefaultCacheDurationNil() {
+	o.DefaultCacheDuration = nil
+}
+
+// UnsetDefaultCacheDuration ensures that no value is present for DefaultCacheDuration, not even an explicit nil
+func (o *Config) UnsetDefaultCacheDuration() {
+	o.DefaultCacheDuration = nil
+}
+
 // GetMonthlyLimitBytes returns the MonthlyLimitBytes field value if set, zero value otherwise (both if not set or set to explicit null).
 func (o *Config) GetMonthlyLimitBytes() (res ConfigGetMonthlyLimitBytesRetType) {
 	res, _ = o.GetMonthlyLimitBytesOk()
@@ -313,6 +374,9 @@ func (o Config) ToMap() (map[string]interface{}, error) {
 	if val, ok := getConfigGetBlockedIPsAttributeTypeOk(o.BlockedIPs); ok {
 		toSerialize["BlockedIPs"] = val
 	}
+	if val, ok := getConfigGetDefaultCacheDurationAttributeTypeOk(o.DefaultCacheDuration); ok {
+		toSerialize["DefaultCacheDuration"] = val
+	}
 	if val, ok := getConfigGetMonthlyLimitBytesAttributeTypeOk(o.MonthlyLimitBytes); ok {
 		toSerialize["MonthlyLimitBytes"] = val
 	}
diff --git a/services/cdn/model_config_patch.go b/services/cdn/model_config_patch.go
index 4285ac6dd..4ded2f960 100644
--- a/services/cdn/model_config_patch.go
+++ b/services/cdn/model_config_patch.go
@@ -77,6 +77,31 @@ func setConfigPatchGetBlockedIPsAttributeType(arg *ConfigPatchGetBlockedIPsAttri
 	*arg = &val
 }
 
+/*
+	types and functions for defaultCacheDuration
+*/
+
+// isNullableString
+type ConfigPatchGetDefaultCacheDurationAttributeType = *NullableString
+
+func getConfigPatchGetDefaultCacheDurationAttributeTypeOk(arg ConfigPatchGetDefaultCacheDurationAttributeType) (ret ConfigPatchGetDefaultCacheDurationRetType, ok bool) {
+	if arg == nil {
+		return nil, false
+	}
+	return arg.Get(), true
+}
+
+func setConfigPatchGetDefaultCacheDurationAttributeType(arg *ConfigPatchGetDefaultCacheDurationAttributeType, val ConfigPatchGetDefaultCacheDurationRetType) {
+	if IsNil(*arg) {
+		*arg = NewNullableString(val)
+	} else {
+		(*arg).Set(val)
+	}
+}
+
+type ConfigPatchGetDefaultCacheDurationArgType = *string
+type ConfigPatchGetDefaultCacheDurationRetType = *string
+
 /*
 	types and functions for monthlyLimitBytes
 */
@@ -144,6 +169,8 @@ type ConfigPatch struct {
 	BlockedCountries ConfigPatchGetBlockedCountriesAttributeType `json:"blockedCountries,omitempty"`
 	// Restricts access to your content by specifying a list of blocked IPv4 addresses.  This feature enhances security and privacy by preventing these addresses from accessing your distribution.
 	BlockedIPs ConfigPatchGetBlockedIPsAttributeType `json:"blockedIPs,omitempty"`
+	// Sets the default cache duration for the distribution.  The default cache duration is applied when a 'Cache-Control' header is not presented in the origin's response. We use ISO8601 duration format for cache duration (e.g. P1DT2H30M)
+	DefaultCacheDuration ConfigPatchGetDefaultCacheDurationAttributeType `json:"defaultCacheDuration,omitempty"`
 	// Sets the monthly limit of bandwidth in bytes that the pullzone is allowed to use.
 	MonthlyLimitBytes ConfigPatchGetMonthlyLimitBytesAttributeType `json:"monthlyLimitBytes,omitempty"`
 	Optimizer         ConfigPatchGetOptimizerAttributeType         `json:"optimizer,omitempty"`
@@ -236,6 +263,40 @@ func (o *ConfigPatch) SetBlockedIPs(v ConfigPatchGetBlockedIPsRetType) {
 	setConfigPatchGetBlockedIPsAttributeType(&o.BlockedIPs, v)
 }
 
+// GetDefaultCacheDuration returns the DefaultCacheDuration field value if set, zero value otherwise (both if not set or set to explicit null).
+func (o *ConfigPatch) GetDefaultCacheDuration() (res ConfigPatchGetDefaultCacheDurationRetType) {
+	res, _ = o.GetDefaultCacheDurationOk()
+	return
+}
+
+// GetDefaultCacheDurationOk returns a tuple with the DefaultCacheDuration field value if set, nil otherwise
+// and a boolean to check if the value has been set.
+// NOTE: If the value is an explicit nil, `nil, true` will be returned
+func (o *ConfigPatch) GetDefaultCacheDurationOk() (ret ConfigPatchGetDefaultCacheDurationRetType, ok bool) {
+	return getConfigPatchGetDefaultCacheDurationAttributeTypeOk(o.DefaultCacheDuration)
+}
+
+// HasDefaultCacheDuration returns a boolean if a field has been set.
+func (o *ConfigPatch) HasDefaultCacheDuration() bool {
+	_, ok := o.GetDefaultCacheDurationOk()
+	return ok
+}
+
+// SetDefaultCacheDuration gets a reference to the given string and assigns it to the DefaultCacheDuration field.
+func (o *ConfigPatch) SetDefaultCacheDuration(v ConfigPatchGetDefaultCacheDurationRetType) {
+	setConfigPatchGetDefaultCacheDurationAttributeType(&o.DefaultCacheDuration, v)
+}
+
+// SetDefaultCacheDurationNil sets the value for DefaultCacheDuration to be an explicit nil
+func (o *ConfigPatch) SetDefaultCacheDurationNil() {
+	o.DefaultCacheDuration = nil
+}
+
+// UnsetDefaultCacheDuration ensures that no value is present for DefaultCacheDuration, not even an explicit nil
+func (o *ConfigPatch) UnsetDefaultCacheDuration() {
+	o.DefaultCacheDuration = nil
+}
+
 // GetMonthlyLimitBytes returns the MonthlyLimitBytes field value if set, zero value otherwise (both if not set or set to explicit null).
 func (o *ConfigPatch) GetMonthlyLimitBytes() (res ConfigPatchGetMonthlyLimitBytesRetType) {
 	res, _ = o.GetMonthlyLimitBytesOk()
@@ -327,6 +388,9 @@ func (o ConfigPatch) ToMap() (map[string]interface{}, error) {
 	if val, ok := getConfigPatchGetBlockedIPsAttributeTypeOk(o.BlockedIPs); ok {
 		toSerialize["BlockedIPs"] = val
 	}
+	if val, ok := getConfigPatchGetDefaultCacheDurationAttributeTypeOk(o.DefaultCacheDuration); ok {
+		toSerialize["DefaultCacheDuration"] = val
+	}
 	if val, ok := getConfigPatchGetMonthlyLimitBytesAttributeTypeOk(o.MonthlyLimitBytes); ok {
 		toSerialize["MonthlyLimitBytes"] = val
 	}
diff --git a/services/cdn/model_create_distribution_payload.go b/services/cdn/model_create_distribution_payload.go
index 29bd6a221..85acbbb07 100644
--- a/services/cdn/model_create_distribution_payload.go
+++ b/services/cdn/model_create_distribution_payload.go
@@ -57,6 +57,27 @@ func setCreateDistributionPayloadGetBlockedIPsAttributeType(arg *CreateDistribut
 	*arg = &val
 }
 
+/*
+	types and functions for defaultCacheDuration
+*/
+
+// isNotNullableString
+type CreateDistributionPayloadGetDefaultCacheDurationAttributeType = *string
+
+func getCreateDistributionPayloadGetDefaultCacheDurationAttributeTypeOk(arg CreateDistributionPayloadGetDefaultCacheDurationAttributeType) (ret CreateDistributionPayloadGetDefaultCacheDurationRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateDistributionPayloadGetDefaultCacheDurationAttributeType(arg *CreateDistributionPayloadGetDefaultCacheDurationAttributeType, val CreateDistributionPayloadGetDefaultCacheDurationRetType) {
+	*arg = &val
+}
+
+type CreateDistributionPayloadGetDefaultCacheDurationArgType = string
+type CreateDistributionPayloadGetDefaultCacheDurationRetType = string
+
 /*
 	types and functions for intentId
 */
@@ -185,6 +206,8 @@ type CreateDistributionPayload struct {
 	BlockedCountries CreateDistributionPayloadGetBlockedCountriesAttributeType `json:"blockedCountries,omitempty"`
 	// Restricts access to your content by specifying a list of blocked IPv4 addresses.  This feature enhances security and privacy by preventing these addresses from accessing your distribution.
 	BlockedIPs CreateDistributionPayloadGetBlockedIPsAttributeType `json:"blockedIPs,omitempty"`
+	// Sets the default cache duration for the distribution.  The default cache duration is applied when a 'Cache-Control' header is not presented in the origin's response. We use ISO8601 duration format for cache duration (e.g. P1DT2H30M)
+	DefaultCacheDuration CreateDistributionPayloadGetDefaultCacheDurationAttributeType `json:"defaultCacheDuration,omitempty"`
 	// While optional, it is greatly encouraged to provide an `intentId`.  This is used to deduplicate requests.   If multiple POST-Requests with the same `intentId` for a given `projectId` are received, all but the first request are dropped.
 	IntentId CreateDistributionPayloadGetIntentIdAttributeType `json:"intentId,omitempty"`
 	// Sets the monthly limit of bandwidth in bytes that the pullzone is allowed to use.
@@ -194,10 +217,10 @@ type CreateDistributionPayload struct {
 	OriginRequestHeaders CreateDistributionPayloadGetOriginRequestHeadersAttributeType `json:"originRequestHeaders,omitempty"`
 	// The origin of the content that should be made available through the CDN.   Note that the path and query parameters are ignored. Ports are allowed. If no protocol is provided, `https` is assumed.   So `www.example.com:1234/somePath?q=123` is normalized to `https://www.example.com:1234`
 	// REQUIRED
-	OriginUrl CreateDistributionPayloadGetOriginUrlAttributeType `json:"originUrl"`
+	OriginUrl CreateDistributionPayloadGetOriginUrlAttributeType `json:"originUrl" required:"true"`
 	// Define in which regions you would like your content to be cached.
 	// REQUIRED
-	Regions CreateDistributionPayloadGetRegionsAttributeType `json:"regions"`
+	Regions CreateDistributionPayloadGetRegionsAttributeType `json:"regions" required:"true"`
 }
 
 type _CreateDistributionPayload CreateDistributionPayload
@@ -267,6 +290,29 @@ func (o *CreateDistributionPayload) SetBlockedIPs(v CreateDistributionPayloadGet
 	setCreateDistributionPayloadGetBlockedIPsAttributeType(&o.BlockedIPs, v)
 }
 
+// GetDefaultCacheDuration returns the DefaultCacheDuration field value if set, zero value otherwise.
+func (o *CreateDistributionPayload) GetDefaultCacheDuration() (res CreateDistributionPayloadGetDefaultCacheDurationRetType) {
+	res, _ = o.GetDefaultCacheDurationOk()
+	return
+}
+
+// GetDefaultCacheDurationOk returns a tuple with the DefaultCacheDuration field value if set, nil otherwise
+// and a boolean to check if the value has been set.
+func (o *CreateDistributionPayload) GetDefaultCacheDurationOk() (ret CreateDistributionPayloadGetDefaultCacheDurationRetType, ok bool) {
+	return getCreateDistributionPayloadGetDefaultCacheDurationAttributeTypeOk(o.DefaultCacheDuration)
+}
+
+// HasDefaultCacheDuration returns a boolean if a field has been set.
+func (o *CreateDistributionPayload) HasDefaultCacheDuration() bool {
+	_, ok := o.GetDefaultCacheDurationOk()
+	return ok
+}
+
+// SetDefaultCacheDuration gets a reference to the given string and assigns it to the DefaultCacheDuration field.
+func (o *CreateDistributionPayload) SetDefaultCacheDuration(v CreateDistributionPayloadGetDefaultCacheDurationRetType) {
+	setCreateDistributionPayloadGetDefaultCacheDurationAttributeType(&o.DefaultCacheDuration, v)
+}
+
 // GetIntentId returns the IntentId field value if set, zero value otherwise.
 func (o *CreateDistributionPayload) GetIntentId() (res CreateDistributionPayloadGetIntentIdRetType) {
 	res, _ = o.GetIntentIdOk()
@@ -401,6 +447,9 @@ func (o CreateDistributionPayload) ToMap() (map[string]interface{}, error) {
 	if val, ok := getCreateDistributionPayloadGetBlockedIPsAttributeTypeOk(o.BlockedIPs); ok {
 		toSerialize["BlockedIPs"] = val
 	}
+	if val, ok := getCreateDistributionPayloadGetDefaultCacheDurationAttributeTypeOk(o.DefaultCacheDuration); ok {
+		toSerialize["DefaultCacheDuration"] = val
+	}
 	if val, ok := getCreateDistributionPayloadGetIntentIdAttributeTypeOk(o.IntentId); ok {
 		toSerialize["IntentId"] = val
 	}
diff --git a/services/cdn/model_create_distribution_response.go b/services/cdn/model_create_distribution_response.go
index f2c4dd8f1..8abd0d2e1 100644
--- a/services/cdn/model_create_distribution_response.go
+++ b/services/cdn/model_create_distribution_response.go
@@ -40,7 +40,7 @@ func setCreateDistributionResponseGetDistributionAttributeType(arg *CreateDistri
 // CreateDistributionResponse struct for CreateDistributionResponse
 type CreateDistributionResponse struct {
 	// REQUIRED
-	Distribution CreateDistributionResponseGetDistributionAttributeType `json:"distribution"`
+	Distribution CreateDistributionResponseGetDistributionAttributeType `json:"distribution" required:"true"`
 }
 
 type _CreateDistributionResponse CreateDistributionResponse
diff --git a/services/cdn/model_custom_domain.go b/services/cdn/model_custom_domain.go
index 20c51dca1..a1bac3cb7 100644
--- a/services/cdn/model_custom_domain.go
+++ b/services/cdn/model_custom_domain.go
@@ -84,9 +84,9 @@ type CustomDomain struct {
 	Errors CustomDomainGetErrorsAttributeType `json:"errors,omitempty"`
 	// The domain. Can be used as input for the GetCustomDomain endpoint
 	// REQUIRED
-	Name CustomDomainGetNameAttributeType `json:"name"`
+	Name CustomDomainGetNameAttributeType `json:"name" required:"true"`
 	// REQUIRED
-	Status CustomDomainGetStatusAttributeType `json:"status"`
+	Status CustomDomainGetStatusAttributeType `json:"status" required:"true"`
 }
 
 type _CustomDomain CustomDomain
diff --git a/services/cdn/model_distribution.go b/services/cdn/model_distribution.go
index 1dad812fb..fb950838d 100644
--- a/services/cdn/model_distribution.go
+++ b/services/cdn/model_distribution.go
@@ -294,24 +294,24 @@ func setDistributionGetUpdatedAtAttributeType(arg *DistributionGetUpdatedAtAttri
 // Distribution struct for Distribution
 type Distribution struct {
 	// REQUIRED
-	Config DistributionGetConfigAttributeType `json:"config"`
+	Config DistributionGetConfigAttributeType `json:"config" required:"true"`
 	// RFC3339 string defining when the distribution was created
 	// REQUIRED
-	CreatedAt DistributionGetCreatedAtAttributeType `json:"createdAt"`
+	CreatedAt DistributionGetCreatedAtAttributeType `json:"createdAt" required:"true"`
 	// REQUIRED
-	Domains DistributionGetDomainsAttributeType `json:"domains"`
+	Domains DistributionGetDomainsAttributeType `json:"domains" required:"true"`
 	// This object may be present if, and only if the distribution has encountered an error state.
 	Errors DistributionGetErrorsAttributeType `json:"errors,omitempty"`
 	// REQUIRED
-	Id DistributionGetIdAttributeType `json:"id"`
+	Id DistributionGetIdAttributeType `json:"id" required:"true"`
 	// REQUIRED
-	ProjectId DistributionGetProjectIdAttributeType `json:"projectId"`
+	ProjectId DistributionGetProjectIdAttributeType `json:"projectId" required:"true"`
 	// - `CREATING`: The distribution was just created.    All the relevant resources are created in the background. Once fully reconciled,   this switches to `ACTIVE`. If there are any issues, the status changes to    `ERROR`. You can look at the `errors` array to get more infos. - `ACTIVE`: The usual state. The desired configuration is synced, there are no errors - `UPDATING`: The state when there is a discrepancy between the desired and    actual configuration state. This occurs right after an update. Will switch to    `ACTIVE` or `ERROR`, depending on if synchronizing succeeds or not. - `DELETING`: The state right after a delete request was received. The distribution will stay in this status   until all resources have been successfully removed, or until we encounter an `ERROR` state.    **NOTE:** You can keep fetching the distribution while it is deleting.    After successful deletion, trying to get a distribution will return a 404 Not Found response - `ERROR`: The error state. Look at the `errors` array for more info.
 	// REQUIRED
-	Status DistributionGetStatusAttributeType `json:"status"`
+	Status DistributionGetStatusAttributeType `json:"status" required:"true"`
 	// RFC3339 string which returns the last time the distribution configuration was modified.
 	// REQUIRED
-	UpdatedAt DistributionGetUpdatedAtAttributeType `json:"updatedAt"`
+	UpdatedAt DistributionGetUpdatedAtAttributeType `json:"updatedAt" required:"true"`
 }
 
 type _Distribution Distribution
diff --git a/services/cdn/model_distribution_logs_record.go b/services/cdn/model_distribution_logs_record.go
index f9ba32e90..f76a46f62 100644
--- a/services/cdn/model_distribution_logs_record.go
+++ b/services/cdn/model_distribution_logs_record.go
@@ -206,25 +206,25 @@ func setDistributionLogsRecordGetTimestampAttributeType(arg *DistributionLogsRec
 // DistributionLogsRecord struct for DistributionLogsRecord
 type DistributionLogsRecord struct {
 	// REQUIRED
-	CacheHit DistributionLogsRecordgetCacheHitAttributeType `json:"cacheHit"`
+	CacheHit DistributionLogsRecordgetCacheHitAttributeType `json:"cacheHit" required:"true"`
 	// REQUIRED
-	DataCenterRegion DistributionLogsRecordGetDataCenterRegionAttributeType `json:"dataCenterRegion"`
+	DataCenterRegion DistributionLogsRecordGetDataCenterRegionAttributeType `json:"dataCenterRegion" required:"true"`
 	// REQUIRED
-	DistributionID DistributionLogsRecordGetDistributionIDAttributeType `json:"distributionID"`
+	DistributionID DistributionLogsRecordGetDistributionIDAttributeType `json:"distributionID" required:"true"`
 	// REQUIRED
-	Host DistributionLogsRecordGetHostAttributeType `json:"host"`
+	Host DistributionLogsRecordGetHostAttributeType `json:"host" required:"true"`
 	// REQUIRED
-	Path DistributionLogsRecordGetPathAttributeType `json:"path"`
+	Path DistributionLogsRecordGetPathAttributeType `json:"path" required:"true"`
 	// ISO 3166-1 A2 compliant country code
 	// REQUIRED
-	RequestCountryCode DistributionLogsRecordGetRequestCountryCodeAttributeType `json:"requestCountryCode"`
+	RequestCountryCode DistributionLogsRecordGetRequestCountryCodeAttributeType `json:"requestCountryCode" required:"true"`
 	// REQUIRED
-	Size DistributionLogsRecordGetSizeAttributeType `json:"size"`
+	Size DistributionLogsRecordGetSizeAttributeType `json:"size" required:"true"`
 	// Can be cast to int32 without loss of precision.
 	// REQUIRED
-	StatusCode DistributionLogsRecordGetStatusCodeAttributeType `json:"statusCode"`
+	StatusCode DistributionLogsRecordGetStatusCodeAttributeType `json:"statusCode" required:"true"`
 	// REQUIRED
-	Timestamp DistributionLogsRecordGetTimestampAttributeType `json:"timestamp"`
+	Timestamp DistributionLogsRecordGetTimestampAttributeType `json:"timestamp" required:"true"`
 }
 
 type _DistributionLogsRecord DistributionLogsRecord
diff --git a/services/cdn/model_distribution_statistics_record.go b/services/cdn/model_distribution_statistics_record.go
index 5b44d03d0..cb1f2d3f6 100644
--- a/services/cdn/model_distribution_statistics_record.go
+++ b/services/cdn/model_distribution_statistics_record.go
@@ -142,21 +142,21 @@ func setDistributionStatisticsRecordGetStartAttributeType(arg *DistributionStati
 type DistributionStatisticsRecord struct {
 	// Number of cached requests that were served
 	// REQUIRED
-	CachedRequests DistributionStatisticsRecordGetCachedRequestsAttributeType `json:"cachedRequests"`
+	CachedRequests DistributionStatisticsRecordGetCachedRequestsAttributeType `json:"cachedRequests" required:"true"`
 	// Total number of requests that were served
 	// REQUIRED
-	TotalRequests DistributionStatisticsRecordGetTotalRequestsAttributeType `json:"totalRequests"`
+	TotalRequests DistributionStatisticsRecordGetTotalRequestsAttributeType `json:"totalRequests" required:"true"`
 	// Total traffic in bytes that occurred during the time interval
 	// REQUIRED
-	TotalTrafficBytes DistributionStatisticsRecordGetTotalTrafficBytesAttributeType `json:"totalTrafficBytes"`
+	TotalTrafficBytes DistributionStatisticsRecordGetTotalTrafficBytesAttributeType `json:"totalTrafficBytes" required:"true"`
 	// Exclusive end of the time interval the statistics refer to
 	// REQUIRED
-	End DistributionStatisticsRecordGetEndAttributeType `json:"end"`
+	End DistributionStatisticsRecordGetEndAttributeType `json:"end" required:"true"`
 	// REQUIRED
-	Regions DistributionStatisticsRecordGetRegionsAttributeType `json:"regions"`
+	Regions DistributionStatisticsRecordGetRegionsAttributeType `json:"regions" required:"true"`
 	// Start of the time interval the statistics refer to
 	// REQUIRED
-	Start DistributionStatisticsRecordGetStartAttributeType `json:"start"`
+	Start DistributionStatisticsRecordGetStartAttributeType `json:"start" required:"true"`
 }
 
 type _DistributionStatisticsRecord DistributionStatisticsRecord
diff --git a/services/cdn/model_distribution_statistics_record_all_of.go b/services/cdn/model_distribution_statistics_record_all_of.go
index 08e87c5ec..c88c33bef 100644
--- a/services/cdn/model_distribution_statistics_record_all_of.go
+++ b/services/cdn/model_distribution_statistics_record_all_of.go
@@ -82,12 +82,12 @@ func setDistributionStatisticsRecordAllOfGetStartAttributeType(arg *Distribution
 type DistributionStatisticsRecordAllOf struct {
 	// Exclusive end of the time interval the statistics refer to
 	// REQUIRED
-	End DistributionStatisticsRecordAllOfGetEndAttributeType `json:"end"`
+	End DistributionStatisticsRecordAllOfGetEndAttributeType `json:"end" required:"true"`
 	// REQUIRED
-	Regions DistributionStatisticsRecordAllOfGetRegionsAttributeType `json:"regions"`
+	Regions DistributionStatisticsRecordAllOfGetRegionsAttributeType `json:"regions" required:"true"`
 	// Start of the time interval the statistics refer to
 	// REQUIRED
-	Start DistributionStatisticsRecordAllOfGetStartAttributeType `json:"start"`
+	Start DistributionStatisticsRecordAllOfGetStartAttributeType `json:"start" required:"true"`
 }
 
 type _DistributionStatisticsRecordAllOf DistributionStatisticsRecordAllOf
diff --git a/services/cdn/model_distribution_statistics_record_entry.go b/services/cdn/model_distribution_statistics_record_entry.go
index cf3b12326..258c77a9b 100644
--- a/services/cdn/model_distribution_statistics_record_entry.go
+++ b/services/cdn/model_distribution_statistics_record_entry.go
@@ -81,13 +81,13 @@ func setDistributionStatisticsRecordEntryGetTotalTrafficBytesAttributeType(arg *
 type DistributionStatisticsRecordEntry struct {
 	// Number of cached requests that were served
 	// REQUIRED
-	CachedRequests DistributionStatisticsRecordEntryGetCachedRequestsAttributeType `json:"cachedRequests"`
+	CachedRequests DistributionStatisticsRecordEntryGetCachedRequestsAttributeType `json:"cachedRequests" required:"true"`
 	// Total number of requests that were served
 	// REQUIRED
-	TotalRequests DistributionStatisticsRecordEntryGetTotalRequestsAttributeType `json:"totalRequests"`
+	TotalRequests DistributionStatisticsRecordEntryGetTotalRequestsAttributeType `json:"totalRequests" required:"true"`
 	// Total traffic in bytes that occurred during the time interval
 	// REQUIRED
-	TotalTrafficBytes DistributionStatisticsRecordEntryGetTotalTrafficBytesAttributeType `json:"totalTrafficBytes"`
+	TotalTrafficBytes DistributionStatisticsRecordEntryGetTotalTrafficBytesAttributeType `json:"totalTrafficBytes" required:"true"`
 }
 
 type _DistributionStatisticsRecordEntry DistributionStatisticsRecordEntry
diff --git a/services/cdn/model_distribution_statistics_record_regions.go b/services/cdn/model_distribution_statistics_record_regions.go
index a88e24f37..ffa8f30f1 100644
--- a/services/cdn/model_distribution_statistics_record_regions.go
+++ b/services/cdn/model_distribution_statistics_record_regions.go
@@ -120,15 +120,15 @@ func setDistributionStatisticsRecordRegionsGetUSAttributeType(arg *DistributionS
 // DistributionStatisticsRecordRegions Mapping of regions to the metrics for this region for the defined time interval All regions are always present. If no traffic was reported for a region, it will  still contain 0-filled properties
 type DistributionStatisticsRecordRegions struct {
 	// REQUIRED
-	AF DistributionStatisticsRecordRegionsGetAFAttributeType `json:"AF"`
+	AF DistributionStatisticsRecordRegionsGetAFAttributeType `json:"AF" required:"true"`
 	// REQUIRED
-	ASIA DistributionStatisticsRecordRegionsGetASIAAttributeType `json:"ASIA"`
+	ASIA DistributionStatisticsRecordRegionsGetASIAAttributeType `json:"ASIA" required:"true"`
 	// REQUIRED
-	EU DistributionStatisticsRecordRegionsGetEUAttributeType `json:"EU"`
+	EU DistributionStatisticsRecordRegionsGetEUAttributeType `json:"EU" required:"true"`
 	// REQUIRED
-	SA DistributionStatisticsRecordRegionsGetSAAttributeType `json:"SA"`
+	SA DistributionStatisticsRecordRegionsGetSAAttributeType `json:"SA" required:"true"`
 	// REQUIRED
-	US DistributionStatisticsRecordRegionsGetUSAttributeType `json:"US"`
+	US DistributionStatisticsRecordRegionsGetUSAttributeType `json:"US" required:"true"`
 }
 
 type _DistributionStatisticsRecordRegions DistributionStatisticsRecordRegions
diff --git a/services/cdn/model_domain.go b/services/cdn/model_domain.go
index 86a5d6660..32101eebb 100644
--- a/services/cdn/model_domain.go
+++ b/services/cdn/model_domain.go
@@ -209,12 +209,12 @@ type Domain struct {
 	Errors DomainGetErrorsAttributeType `json:"errors,omitempty"`
 	// The domain. If this is a custom domain, you can call the GetCustomDomain Endpoint
 	// REQUIRED
-	Name DomainGetNameAttributeType `json:"name"`
+	Name DomainGetNameAttributeType `json:"name" required:"true"`
 	// REQUIRED
-	Status DomainGetStatusAttributeType `json:"status"`
+	Status DomainGetStatusAttributeType `json:"status" required:"true"`
 	// Specifies the type of this Domain. Custom Domain can be further queries using the GetCustomDomain Endpoint
 	// REQUIRED
-	Type DomainGetTypeAttributeType `json:"type"`
+	Type DomainGetTypeAttributeType `json:"type" required:"true"`
 }
 
 type _Domain Domain
diff --git a/services/cdn/model_error_details.go b/services/cdn/model_error_details.go
index a9f110e1b..44f69b81e 100644
--- a/services/cdn/model_error_details.go
+++ b/services/cdn/model_error_details.go
@@ -234,14 +234,14 @@ type ErrorDetails struct {
 	De ErrorDetailsGetDeAttributeType `json:"de,omitempty"`
 	// Deprecated: Check the GitHub changelog for alternatives
 	// REQUIRED
-	Description ErrorDetailsGetDescriptionAttributeType `json:"description"`
+	Description ErrorDetailsGetDescriptionAttributeType `json:"description" required:"true"`
 	// English description of the error
 	// REQUIRED
-	En ErrorDetailsGetEnAttributeType `json:"en"`
+	En ErrorDetailsGetEnAttributeType `json:"en" required:"true"`
 	// Optional field in the request this error detail refers to
 	Field ErrorDetailsGetFieldAttributeType `json:"field,omitempty"`
 	// REQUIRED
-	Key ErrorDetailsGetKeyAttributeType `json:"key"`
+	Key ErrorDetailsGetKeyAttributeType `json:"key" required:"true"`
 }
 
 type _ErrorDetails ErrorDetails
diff --git a/services/cdn/model_find_cache_paths_response.go b/services/cdn/model_find_cache_paths_response.go
index 3e3d22efd..246b204b9 100644
--- a/services/cdn/model_find_cache_paths_response.go
+++ b/services/cdn/model_find_cache_paths_response.go
@@ -40,7 +40,7 @@ func setFindCachePathsResponseGetResponseAttributeType(arg *FindCachePathsRespon
 // FindCachePathsResponse struct for FindCachePathsResponse
 type FindCachePathsResponse struct {
 	// REQUIRED
-	Response FindCachePathsResponseGetResponseAttributeType `json:"response"`
+	Response FindCachePathsResponseGetResponseAttributeType `json:"response" required:"true"`
 }
 
 type _FindCachePathsResponse FindCachePathsResponse
diff --git a/services/cdn/model_find_cache_paths_response_entry.go b/services/cdn/model_find_cache_paths_response_entry.go
index f77d29582..1bed5abdd 100644
--- a/services/cdn/model_find_cache_paths_response_entry.go
+++ b/services/cdn/model_find_cache_paths_response_entry.go
@@ -42,7 +42,7 @@ type FindCachePathsResponseEntryGetPathRetType = string
 type FindCachePathsResponseEntry struct {
 	// Defines one path that was previously used as part of a granular purge
 	// REQUIRED
-	Path FindCachePathsResponseEntryGetPathAttributeType `json:"path"`
+	Path FindCachePathsResponseEntryGetPathAttributeType `json:"path" required:"true"`
 }
 
 type _FindCachePathsResponseEntry FindCachePathsResponseEntry
diff --git a/services/cdn/model_generic_json_response.go b/services/cdn/model_generic_json_response.go
index 41634bb6e..b2166c941 100644
--- a/services/cdn/model_generic_json_response.go
+++ b/services/cdn/model_generic_json_response.go
@@ -63,7 +63,7 @@ type GenericJSONResponse struct {
 	// Listing of issues with your request
 	Details GenericJSONResponseGetDetailsAttributeType `json:"details,omitempty"`
 	// REQUIRED
-	Message GenericJSONResponseGetMessageAttributeType `json:"message"`
+	Message GenericJSONResponseGetMessageAttributeType `json:"message" required:"true"`
 }
 
 type _GenericJSONResponse GenericJSONResponse
diff --git a/services/cdn/model_get_cache_info_response.go b/services/cdn/model_get_cache_info_response.go
index 371ec23e2..d470c9ba6 100644
--- a/services/cdn/model_get_cache_info_response.go
+++ b/services/cdn/model_get_cache_info_response.go
@@ -61,10 +61,10 @@ func setGetCacheInfoResponseGetLastPurgeTimeAttributeType(arg *GetCacheInfoRespo
 // GetCacheInfoResponse struct for GetCacheInfoResponse
 type GetCacheInfoResponse struct {
 	// REQUIRED
-	History GetCacheInfoResponseGetHistoryAttributeType `json:"history"`
+	History GetCacheInfoResponseGetHistoryAttributeType `json:"history" required:"true"`
 	// Returns the last time the cache was purged by calling the PurgeCache endpoint.  Time represented as RFC3339 compliant string. If the cache was never purged, this returns `null`
 	// REQUIRED
-	LastPurgeTime GetCacheInfoResponseGetLastPurgeTimeAttributeType `json:"lastPurgeTime"`
+	LastPurgeTime GetCacheInfoResponseGetLastPurgeTimeAttributeType `json:"lastPurgeTime" required:"true"`
 }
 
 type _GetCacheInfoResponse GetCacheInfoResponse
diff --git a/services/cdn/model_get_cache_info_response_history_entry.go b/services/cdn/model_get_cache_info_response_history_entry.go
index 8b9aa3aee..cca70d11c 100644
--- a/services/cdn/model_get_cache_info_response_history_entry.go
+++ b/services/cdn/model_get_cache_info_response_history_entry.go
@@ -187,11 +187,11 @@ func setGetCacheInfoResponseHistoryEntryGetTypeAttributeType(arg *GetCacheInfoRe
 type GetCacheInfoResponseHistoryEntry struct {
 	// Deprecated: Check the GitHub changelog for alternatives
 	// REQUIRED
-	OccuredAt GetCacheInfoResponseHistoryEntryGetOccuredAtAttributeType `json:"occuredAt"`
+	OccuredAt GetCacheInfoResponseHistoryEntryGetOccuredAtAttributeType `json:"occuredAt" required:"true"`
 	// REQUIRED
-	OccurredAt GetCacheInfoResponseHistoryEntryGetOccurredAtAttributeType `json:"occurredAt"`
+	OccurredAt GetCacheInfoResponseHistoryEntryGetOccurredAtAttributeType `json:"occurredAt" required:"true"`
 	// REQUIRED
-	Type GetCacheInfoResponseHistoryEntryGetTypeAttributeType `json:"type"`
+	Type GetCacheInfoResponseHistoryEntryGetTypeAttributeType `json:"type" required:"true"`
 }
 
 type _GetCacheInfoResponseHistoryEntry GetCacheInfoResponseHistoryEntry
diff --git a/services/cdn/model_get_custom_domain_response.go b/services/cdn/model_get_custom_domain_response.go
index 40a945394..bd1235e16 100644
--- a/services/cdn/model_get_custom_domain_response.go
+++ b/services/cdn/model_get_custom_domain_response.go
@@ -61,10 +61,10 @@ type GetCustomDomainResponseGetDomainRetType = string
 // GetCustomDomainResponse struct for GetCustomDomainResponse
 type GetCustomDomainResponse struct {
 	// REQUIRED
-	CustomDomain GetCustomDomainResponseGetCustomDomainAttributeType `json:"customDomain"`
+	CustomDomain GetCustomDomainResponseGetCustomDomainAttributeType `json:"customDomain" required:"true"`
 	// Deprecated: Check the GitHub changelog for alternatives
 	// REQUIRED
-	Domain GetCustomDomainResponseGetDomainAttributeType `json:"domain"`
+	Domain GetCustomDomainResponseGetDomainAttributeType `json:"domain" required:"true"`
 }
 
 type _GetCustomDomainResponse GetCustomDomainResponse
diff --git a/services/cdn/model_get_distribution_response.go b/services/cdn/model_get_distribution_response.go
index 32dce8709..b14f63ca9 100644
--- a/services/cdn/model_get_distribution_response.go
+++ b/services/cdn/model_get_distribution_response.go
@@ -40,7 +40,7 @@ func setGetDistributionResponseGetDistributionAttributeType(arg *GetDistribution
 // GetDistributionResponse struct for GetDistributionResponse
 type GetDistributionResponse struct {
 	// REQUIRED
-	Distribution GetDistributionResponseGetDistributionAttributeType `json:"distribution"`
+	Distribution GetDistributionResponseGetDistributionAttributeType `json:"distribution" required:"true"`
 }
 
 type _GetDistributionResponse GetDistributionResponse
diff --git a/services/cdn/model_get_logs_response.go b/services/cdn/model_get_logs_response.go
index 05efaf1ee..c346e3176 100644
--- a/services/cdn/model_get_logs_response.go
+++ b/services/cdn/model_get_logs_response.go
@@ -61,7 +61,7 @@ type GetLogsResponseGetNextPageIdentifierRetType = string
 // GetLogsResponse struct for GetLogsResponse
 type GetLogsResponse struct {
 	// REQUIRED
-	Logs               GetLogsResponseGetLogsAttributeType               `json:"logs"`
+	Logs               GetLogsResponseGetLogsAttributeType               `json:"logs" required:"true"`
 	NextPageIdentifier GetLogsResponseGetNextPageIdentifierAttributeType `json:"nextPageIdentifier,omitempty"`
 }
 
diff --git a/services/cdn/model_get_statistics_response.go b/services/cdn/model_get_statistics_response.go
index 90528bdf6..987fa833b 100644
--- a/services/cdn/model_get_statistics_response.go
+++ b/services/cdn/model_get_statistics_response.go
@@ -40,7 +40,7 @@ func setGetStatisticsResponseGetRecordsAttributeType(arg *GetStatisticsResponseG
 // GetStatisticsResponse struct for GetStatisticsResponse
 type GetStatisticsResponse struct {
 	// REQUIRED
-	Records GetStatisticsResponseGetRecordsAttributeType `json:"records"`
+	Records GetStatisticsResponseGetRecordsAttributeType `json:"records" required:"true"`
 }
 
 type _GetStatisticsResponse GetStatisticsResponse
diff --git a/services/cdn/model_http_backend.go b/services/cdn/model_http_backend.go
index b94cbfeac..e52e582a7 100644
--- a/services/cdn/model_http_backend.go
+++ b/services/cdn/model_http_backend.go
@@ -83,11 +83,11 @@ type HttpBackendGetTypeRetType = string
 type HttpBackend struct {
 	// Headers that will be sent with every request to the configured origin.  **WARNING**: Do not store sensitive values in the headers.  The configuration is stored as plain text.
 	// REQUIRED
-	OriginRequestHeaders HttpBackendGetOriginRequestHeadersAttributeType `json:"originRequestHeaders"`
+	OriginRequestHeaders HttpBackendGetOriginRequestHeadersAttributeType `json:"originRequestHeaders" required:"true"`
 	// REQUIRED
-	OriginUrl HttpBackendGetOriginUrlAttributeType `json:"originUrl"`
+	OriginUrl HttpBackendGetOriginUrlAttributeType `json:"originUrl" required:"true"`
 	// REQUIRED
-	Type HttpBackendGetTypeAttributeType `json:"type"`
+	Type HttpBackendGetTypeAttributeType `json:"type" required:"true"`
 }
 
 type _HttpBackend HttpBackend
diff --git a/services/cdn/model_http_backend_patch.go b/services/cdn/model_http_backend_patch.go
index 4302f8e5e..4bd4ba015 100644
--- a/services/cdn/model_http_backend_patch.go
+++ b/services/cdn/model_http_backend_patch.go
@@ -86,7 +86,7 @@ type HttpBackendPatch struct {
 	OriginUrl            HttpBackendPatchGetOriginUrlAttributeType            `json:"originUrl,omitempty"`
 	// This property is required to determine the used backend type.
 	// REQUIRED
-	Type HttpBackendPatchGetTypeAttributeType `json:"type"`
+	Type HttpBackendPatchGetTypeAttributeType `json:"type" required:"true"`
 }
 
 type _HttpBackendPatch HttpBackendPatch
diff --git a/services/cdn/model_list_distributions_response.go b/services/cdn/model_list_distributions_response.go
index 8bd574d59..9243a3a69 100644
--- a/services/cdn/model_list_distributions_response.go
+++ b/services/cdn/model_list_distributions_response.go
@@ -61,7 +61,7 @@ type ListDistributionsResponseGetNextPageIdentifierRetType = string
 // ListDistributionsResponse struct for ListDistributionsResponse
 type ListDistributionsResponse struct {
 	// REQUIRED
-	Distributions      ListDistributionsResponseGetDistributionsAttributeType      `json:"distributions"`
+	Distributions      ListDistributionsResponseGetDistributionsAttributeType      `json:"distributions" required:"true"`
 	NextPageIdentifier ListDistributionsResponseGetNextPageIdentifierAttributeType `json:"nextPageIdentifier,omitempty"`
 }
 
diff --git a/services/cdn/model_optimizer.go b/services/cdn/model_optimizer.go
index 4af7732b7..6d9565ff5 100644
--- a/services/cdn/model_optimizer.go
+++ b/services/cdn/model_optimizer.go
@@ -41,7 +41,7 @@ func setOptimizergetEnabledAttributeType(arg *OptimizergetEnabledAttributeType,
 type Optimizer struct {
 	// Determines if the optimizer should be enabled for this distribution and incurs a monthly fee
 	// REQUIRED
-	Enabled OptimizergetEnabledAttributeType `json:"enabled"`
+	Enabled OptimizergetEnabledAttributeType `json:"enabled" required:"true"`
 }
 
 type _Optimizer Optimizer
diff --git a/services/cdn/model_patch_distribution_response.go b/services/cdn/model_patch_distribution_response.go
index da2687f6e..5fe155fd1 100644
--- a/services/cdn/model_patch_distribution_response.go
+++ b/services/cdn/model_patch_distribution_response.go
@@ -40,7 +40,7 @@ func setPatchDistributionResponseGetDistributionAttributeType(arg *PatchDistribu
 // PatchDistributionResponse struct for PatchDistributionResponse
 type PatchDistributionResponse struct {
 	// REQUIRED
-	Distribution PatchDistributionResponseGetDistributionAttributeType `json:"distribution"`
+	Distribution PatchDistributionResponseGetDistributionAttributeType `json:"distribution" required:"true"`
 }
 
 type _PatchDistributionResponse PatchDistributionResponse
diff --git a/services/cdn/model_put_custom_domain_response.go b/services/cdn/model_put_custom_domain_response.go
index 997141438..0c0a05cc2 100644
--- a/services/cdn/model_put_custom_domain_response.go
+++ b/services/cdn/model_put_custom_domain_response.go
@@ -61,10 +61,10 @@ type PutCustomDomainResponseGetDomainRetType = string
 // PutCustomDomainResponse struct for PutCustomDomainResponse
 type PutCustomDomainResponse struct {
 	// REQUIRED
-	CustomDomain PutCustomDomainResponseGetCustomDomainAttributeType `json:"customDomain"`
+	CustomDomain PutCustomDomainResponseGetCustomDomainAttributeType `json:"customDomain" required:"true"`
 	// Deprecated: Check the GitHub changelog for alternatives
 	// REQUIRED
-	Domain PutCustomDomainResponseGetDomainAttributeType `json:"domain"`
+	Domain PutCustomDomainResponseGetDomainAttributeType `json:"domain" required:"true"`
 }
 
 type _PutCustomDomainResponse PutCustomDomainResponse
diff --git a/services/cdn/model_status_error.go b/services/cdn/model_status_error.go
index 40edd6732..c231786c5 100644
--- a/services/cdn/model_status_error.go
+++ b/services/cdn/model_status_error.go
@@ -194,10 +194,10 @@ type StatusError struct {
 	De StatusErrorGetDeAttributeType `json:"de,omitempty"`
 	// An english translation string corresponding to the error key. An english translation key is always present.
 	// REQUIRED
-	En StatusErrorGetEnAttributeType `json:"en"`
+	En StatusErrorGetEnAttributeType `json:"en" required:"true"`
 	// An enum value that describes a Status Error.
 	// REQUIRED
-	Key StatusErrorGetKeyAttributeType `json:"key"`
+	Key StatusErrorGetKeyAttributeType `json:"key" required:"true"`
 }
 
 type _StatusError StatusError