This release changes the CreateFleet CLI and SDK's such that if you do not specify a client token, a randomly generated token is used for the request to ensure idempotency.

Author: aws-sdk-dotnet-automation

generator/ServiceModels/ec2/ec2-2016-11-15.api.json

@@ -11509,7 +11509,10 @@
       ],
       "members":{
         "DryRun":{"shape":"Boolean"},
-        "ClientToken":{"shape":"String"},
+        "ClientToken":{
+          "shape":"String",
+          "idempotencyToken":true
+        },
         "SpotOptions":{"shape":"SpotOptionsRequest"},
         "OnDemandOptions":{"shape":"OnDemandOptionsRequest"},
         "ExcessCapacityTerminationPolicy":{"shape":"FleetExcessCapacityTerminationPolicy"},

generator/ServiceModels/ec2/ec2-2016-11-15.docs.json

@@ -48,7 +48,12 @@ namespace Amazon.EC2.Model
     /// elapsed. You can't cancel a future-dated Capacity Reservation during the commitment
     /// duration.
     /// </para>
-    ///  </li> </ul> 
+    ///  </li> </ul> <note> 
+    /// <para>
+    /// You can't modify or cancel a Capacity Block. For more information, see <a href="https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-capacity-blocks.html">Capacity
+    /// Blocks for ML</a>.
+    /// </para>
+    ///  </note> 
     /// <para>
     /// If a future-dated Capacity Reservation enters the <c>delayed</c> state, the commitment
     /// duration is waived, and you can cancel it as soon as it enters the <c>active</c> state.

generator/ServiceModels/ec2/ec2-2016-11-15.normal.json

@@ -65,7 +65,12 @@ public partial class CreateFleetRequest : AmazonEC2Request
         /// Gets and sets the property ClientToken. 
         /// <para>
         /// 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
+        /// request. If you do not specify a client token, a randomly generated token is used
+        /// for the request to ensure idempotency.
+        /// </para>
+        ///  
+        /// <para>
+        /// For more information, see <a href="https://docs.aws.amazon.com/AWSEC2/latest/APIReference/Run_Instance_Idempotency.html">Ensuring
         /// idempotency</a>.
         /// </para>
         /// </summary>

sdk/src/Services/EC2/Generated/Model/CancelCapacityReservationRequest.cs

@@ -34,6 +34,22 @@ namespace Amazon.EC2.Model
     /// Describes Capacity Block offerings available for purchase in the Amazon Web Services
     /// Region that you're currently using. With Capacity Blocks, you purchase a specific
     /// instance type for a period of time.
+    /// 
+    ///  
+    /// <para>
+    /// To search for an available Capacity Block offering, you specify a reservation duration
+    /// and instance count. You must select one of the following options.
+    /// </para>
+    ///  <ul> <li> 
+    /// <para>
+    /// For reservation durations<b> 1-day increments up 14 days and 7-day increments up to
+    /// 182 days total</b> 
+    /// </para>
+    ///  </li> <li> 
+    /// <para>
+    /// For instance count<b> 1, 2, 4, 8, 16, 32, or 64 instances</b> 
+    /// </para>
+    ///  </li> </ul>
     /// </summary>
     public partial class DescribeCapacityBlockOfferingsRequest : AmazonEC2Request
     {

sdk/src/Services/EC2/Generated/Model/CreateFleetRequest.cs

@@ -69,7 +69,8 @@ namespace Amazon.EC2.Model
     /// </para>
     ///  </li> <li> 
     /// <para>
-    ///  <c>trn1.2xlarge</c> | <c>trn1.32xlarge</c> | <c>trn1n.32xlarge</c> 
+    ///  <c>trn1.2xlarge</c> | <c>trn1.32xlarge</c> | <c>trn1n.32xlarge</c> | <c>trn2.48xlarge</c>
+    /// | <c>trn2u.48xlarge</c> 
     /// </para>
     ///  </li> </ul> </li> </ul> 
     /// <para>

sdk/src/Services/EC2/Generated/Model/DescribeCapacityBlockOfferingsRequest.cs

@@ -176,8 +176,14 @@ internal bool IsSetEventDescription()
         /// </para>
         ///  </li> <li> 
         /// <para>
-        ///  <c>launchSpecUnusable</c> - The price in a launch specification is not valid because
-        /// it is below the Spot price.
+        ///  <c>launchSpecUnusable</c> - The price specified in a launch specification is not
+        /// valid because it is below the Spot price for the requested Spot pools.
+        /// </para>
+        ///  
+        /// <para>
+        /// Note: Even if a fleet with the <c>maintain</c> request type is in the process of being
+        /// canceled, it may still publish a <c>launchSpecUnusable</c> event. This does not mean
+        /// that the canceled fleet is attempting to launch a new instance.
         /// </para>
         ///  </li> <li> 
         /// <para>

sdk/src/Services/EC2/Generated/Model/DescribeInstanceTopologyRequest.cs

@@ -78,7 +78,7 @@ internal bool IsSetEbs()
         /// <summary>
         /// Gets and sets the property NoDevice. 
         /// <para>
-        /// suppress the specified device included in the block device mapping.
+        /// Suppresses the specified device included in the block device mapping.
         /// </para>
         /// </summary>
         public string NoDevice

sdk/src/Services/EC2/Generated/Model/EventInformation.cs

@@ -276,11 +276,15 @@ internal bool IsSetAcceleratorTotalMemoryMiB()
         /// </para>
         ///  <ul> <li> 
         /// <para>
+        /// For instance types with FPGA accelerators, specify <c>fpga</c>.
+        /// </para>
+        ///  </li> <li> 
+        /// <para>
         /// For instance types with GPU accelerators, specify <c>gpu</c>.
         /// </para>
         ///  </li> <li> 
         /// <para>
-        /// For instance types with FPGA accelerators, specify <c>fpga</c>.
+        /// For instance types with Inference accelerators, specify <c>inference</c>.
         /// </para>
         ///  </li> </ul> 
         /// <para>