diff --git a/api_names_out.yaml b/api_names_out.yaml
index 88c83e32632..d008414b843 100644
--- a/api_names_out.yaml
+++ b/api_names_out.yaml
@@ -235005,6 +235005,7 @@
 "/documentai:v1/GoogleCloudDocumentaiV1ProcessResponse/document": document
 "/documentai:v1/GoogleCloudDocumentaiV1ProcessResponse/humanReviewStatus": human_review_status
 "/documentai:v1/GoogleCloudDocumentaiV1Processor": google_cloud_documentai_v1_processor
+"/documentai:v1/GoogleCloudDocumentaiV1Processor/activeSchemaVersion": active_schema_version
 "/documentai:v1/GoogleCloudDocumentaiV1Processor/createTime": create_time
 "/documentai:v1/GoogleCloudDocumentaiV1Processor/defaultProcessorVersion": default_processor_version
 "/documentai:v1/GoogleCloudDocumentaiV1Processor/displayName": display_name
diff --git a/generated/google-apis-documentai_v1/CHANGELOG.md b/generated/google-apis-documentai_v1/CHANGELOG.md
index 1a143843bb1..de2eb9d943e 100644
--- a/generated/google-apis-documentai_v1/CHANGELOG.md
+++ b/generated/google-apis-documentai_v1/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Release history for google-apis-documentai_v1
 
+### v0.104.0 (2025-09-21)
+
+* Regenerated from discovery document revision 20250914
+
 ### v0.103.0 (2025-09-14)
 
 * Regenerated from discovery document revision 20250908
diff --git a/generated/google-apis-documentai_v1/lib/google/apis/documentai_v1/classes.rb b/generated/google-apis-documentai_v1/lib/google/apis/documentai_v1/classes.rb
index b6da1e5cf6d..9441515693f 100644
--- a/generated/google-apis-documentai_v1/lib/google/apis/documentai_v1/classes.rb
+++ b/generated/google-apis-documentai_v1/lib/google/apis/documentai_v1/classes.rb
@@ -5577,6 +5577,13 @@ def update!(**args)
       class GoogleCloudDocumentaiV1Processor
         include Google::Apis::Core::Hashable
       
+        # Optional. SchemaVersion used by the Processor. It is the same as Processor's
+        # DatasetSchema.schema_version Format is `projects/`project`/locations/`location`
+        # /schemas/`schema`/schemaVersions/`schema_version`
+        # Corresponds to the JSON property `activeSchemaVersion`
+        # @return [String]
+        attr_accessor :active_schema_version
+      
         # Output only. The time the processor was created.
         # Corresponds to the JSON property `createTime`
         # @return [String]
@@ -5644,6 +5651,7 @@ def initialize(**args)
       
         # Update properties of this object
         def update!(**args)
+          @active_schema_version = args[:active_schema_version] if args.key?(:active_schema_version)
           @create_time = args[:create_time] if args.key?(:create_time)
           @default_processor_version = args[:default_processor_version] if args.key?(:default_processor_version)
           @display_name = args[:display_name] if args.key?(:display_name)
@@ -6292,7 +6300,7 @@ def update!(**args)
       class GoogleCloudDocumentaiV1TrainProcessorVersionRequestCustomDocumentExtractionOptions
         include Google::Apis::Core::Hashable
       
-        # Training method to use for CDE training.
+        # Optional. Training method to use for CDE training.
         # Corresponds to the JSON property `trainingMethod`
         # @return [String]
         attr_accessor :training_method
diff --git a/generated/google-apis-documentai_v1/lib/google/apis/documentai_v1/gem_version.rb b/generated/google-apis-documentai_v1/lib/google/apis/documentai_v1/gem_version.rb
index f841f5ec4d8..ec9adc5593b 100644
--- a/generated/google-apis-documentai_v1/lib/google/apis/documentai_v1/gem_version.rb
+++ b/generated/google-apis-documentai_v1/lib/google/apis/documentai_v1/gem_version.rb
@@ -16,13 +16,13 @@ module Google
   module Apis
     module DocumentaiV1
       # Version of the google-apis-documentai_v1 gem
-      GEM_VERSION = "0.103.0"
+      GEM_VERSION = "0.104.0"
 
       # Version of the code generator used to generate this client
       GENERATOR_VERSION = "0.18.0"
 
       # Revision of the discovery document this client was generated from
-      REVISION = "20250908"
+      REVISION = "20250914"
     end
   end
 end
diff --git a/generated/google-apis-documentai_v1/lib/google/apis/documentai_v1/representations.rb b/generated/google-apis-documentai_v1/lib/google/apis/documentai_v1/representations.rb
index 43760c0e1db..14bda085820 100644
--- a/generated/google-apis-documentai_v1/lib/google/apis/documentai_v1/representations.rb
+++ b/generated/google-apis-documentai_v1/lib/google/apis/documentai_v1/representations.rb
@@ -3280,6 +3280,7 @@ class Representation < Google::Apis::Core::JsonRepresentation
       class GoogleCloudDocumentaiV1Processor
         # @private
         class Representation < Google::Apis::Core::JsonRepresentation
+          property :active_schema_version, as: 'activeSchemaVersion'
           property :create_time, as: 'createTime'
           property :default_processor_version, as: 'defaultProcessorVersion'
           property :display_name, as: 'displayName'