Amazon Elastic Compute Cloud Update: Introduced a new clientToken request parameter on CreateNetworkAcl and CreateRouteTable APIs. The clientToken parameter allows idempotent operations on the APIs.

Author: AWS

.changes/next-release/feature-AmazonElasticComputeCloud-ee9be8e.json

@@ -0,0 +1,6 @@
+{
+    "type": "feature",
+    "category": "Amazon Elastic Compute Cloud",
+    "contributor": "",
+    "description": "Introduced a new clientToken request parameter on CreateNetworkAcl and CreateRouteTable APIs. The clientToken parameter allows idempotent operations on the APIs."
+}

services/ec2/src/main/resources/codegen-resources/service-2.json

@@ -9245,7 +9245,8 @@
         "available",
         "information",
         "impaired",
-        "unavailable"
+        "unavailable",
+        "constrained"
       ]
     },
     "AvailabilityZoneStringList":{
@@ -12595,7 +12596,7 @@
       "members":{
         "ClientToken":{
           "shape":"String",
-          "documentation":"<p>Unique, case-sensitive identifier that you provide to ensure the idempotency of the request. For more information, see <a href=\"https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/Run_Instance_Idempotency.html\">How to ensure idempotency</a>.</p>"
+          "documentation":"<p>Unique, case-sensitive identifier that you provide to ensure the idempotency of the request. For more information, see <a href=\"https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/Run_Instance_Idempotency.html\">Ensuring idempotency</a>.</p>"
         },
         "DryRun":{
           "shape":"Boolean",
@@ -13674,7 +13675,7 @@
         },
         "ClientToken":{
           "shape":"String",
-          "documentation":"<p>Unique, case-sensitive identifier that you provide to ensure the idempotency of the request. For more information, see <a href=\"https://docs.aws.amazon.com/AWSEC2/latest/APIReference/Run_Instance_Idempotency.html\">How to ensure idempotency</a>.</p> <p>Constraint: Maximum 64 ASCII characters.</p>",
+          "documentation":"<p>Unique, case-sensitive identifier that you provide to ensure the idempotency of the request. For more information, see <a href=\"https://docs.aws.amazon.com/AWSEC2/latest/APIReference/Run_Instance_Idempotency.html\">Ensuring idempotency</a>.</p> <p>Constraint: Maximum 64 ASCII characters.</p>",
           "idempotencyToken":true
         },
         "DryRun":{
@@ -13809,6 +13810,11 @@
           "shape":"TagSpecificationList",
           "documentation":"<p>The tags to assign to the network ACL.</p>",
           "locationName":"TagSpecification"
+        },
+        "ClientToken":{
+          "shape":"String",
+          "documentation":"<p>Unique, case-sensitive identifier that you provide to ensure the idempotency of the request. For more information, see <a href=\"https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/Run_Instance_Idempotency.html\">Ensuring idempotency</a>.</p>",
+          "idempotencyToken":true
         }
       }
     },
@@ -13819,6 +13825,11 @@
           "shape":"NetworkAcl",
           "documentation":"<p>Information about the network ACL.</p>",
           "locationName":"networkAcl"
+        },
+        "ClientToken":{
+          "shape":"String",
+          "documentation":"<p>Unique, case-sensitive identifier to ensure the idempotency of the request. Only returned if a client token was provided in the request.</p>",
+          "locationName":"clientToken"
         }
       }
     },
@@ -14384,6 +14395,11 @@
           "shape":"TagSpecificationList",
           "documentation":"<p>The tags to assign to the route table.</p>",
           "locationName":"TagSpecification"
+        },
+        "ClientToken":{
+          "shape":"String",
+          "documentation":"<p>Unique, case-sensitive identifier that you provide to ensure the idempotency of the request. For more information, see <a href=\"https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/Run_Instance_Idempotency.html\">Ensuring idempotency</a>.</p>",
+          "idempotencyToken":true
         }
       }
     },
@@ -14394,6 +14410,11 @@
           "shape":"RouteTable",
           "documentation":"<p>Information about the route table.</p>",
           "locationName":"routeTable"
+        },
+        "ClientToken":{
+          "shape":"String",
+          "documentation":"<p>Unique, case-sensitive identifier to ensure the idempotency of the request. Only returned if a client token was provided in the request.</p>",
+          "locationName":"clientToken"
         }
       }
     },
@@ -54690,7 +54711,8 @@
       "type":"string",
       "enum":[
         "pending",
-        "available"
+        "available",
+        "unavailable"
       ]
     },
     "Subscription":{