diff --git a/CHANGELOG.md b/CHANGELOG.md
index fd61c1e2daf..77d90929448 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,10 @@
+Release v1.49.21 (2024-01-14)
+===
+
+### Service Client Updates
+* `service/sagemaker`: Updates service API
+  * This release will have ValidationException thrown if certain invalid app types are provided. The release will also throw ValidationException if more than 10 account ids are provided in VpcOnlyTrustedAccounts.
+
 Release v1.49.20 (2024-01-12)
 ===
 
diff --git a/aws/version.go b/aws/version.go
index c4fc2717ddf..fc9a2e5040c 100644
--- a/aws/version.go
+++ b/aws/version.go
@@ -5,4 +5,4 @@ package aws
 const SDKName = "aws-sdk-go"
 
 // SDKVersion is the version of this SDK
-const SDKVersion = "1.49.20"
+const SDKVersion = "1.49.21"
diff --git a/models/apis/sagemaker/2017-07-24/api-2.json b/models/apis/sagemaker/2017-07-24/api-2.json
index 5c765f73480..e46c7ea0909 100644
--- a/models/apis/sagemaker/2017-07-24/api-2.json
+++ b/models/apis/sagemaker/2017-07-24/api-2.json
@@ -3714,7 +3714,10 @@
     },
     "AdditionalS3DataSourceDataType":{
       "type":"string",
-      "enum":["S3Object"]
+      "enum":[
+        "S3Object",
+        "S3Prefix"
+      ]
     },
     "AgentVersion":{
       "type":"structure",
@@ -4060,17 +4063,11 @@
         "KernelGateway",
         "DetailedProfiler",
         "TensorBoard",
-        "VSCode",
-        "Savitur",
         "CodeEditor",
         "JupyterLab",
         "RStudioServerPro",
-        "RSession",
         "RSessionGateway",
-        "Canvas",
-        "DatasetManager",
-        "SageMakerLite",
-        "Local"
+        "Canvas"
       ]
     },
     "ApprovalDescription":{
@@ -20696,8 +20693,6 @@
       "enum":[
         "JupyterServer",
         "KernelGateway",
-        "VSCode",
-        "Savitur",
         "CodeEditor",
         "JupyterLab"
       ]
@@ -22887,7 +22882,8 @@
     },
     "VpcOnlyTrustedAccounts":{
       "type":"list",
-      "member":{"shape":"AccountId"}
+      "member":{"shape":"AccountId"},
+      "max":10
     },
     "VpcSecurityGroupIds":{
       "type":"list",
diff --git a/service/sagemaker/api.go b/service/sagemaker/api.go
index 58aac11c9e1..98985fb80f4 100644
--- a/service/sagemaker/api.go
+++ b/service/sagemaker/api.go
@@ -125364,12 +125364,16 @@ func ActionStatus_Values() []string {
 const (
 	// AdditionalS3DataSourceDataTypeS3object is a AdditionalS3DataSourceDataType enum value
 	AdditionalS3DataSourceDataTypeS3object = "S3Object"
+
+	// AdditionalS3DataSourceDataTypeS3prefix is a AdditionalS3DataSourceDataType enum value
+	AdditionalS3DataSourceDataTypeS3prefix = "S3Prefix"
 )
 
 // AdditionalS3DataSourceDataType_Values returns all elements of the AdditionalS3DataSourceDataType enum
 func AdditionalS3DataSourceDataType_Values() []string {
 	return []string{
 		AdditionalS3DataSourceDataTypeS3object,
+		AdditionalS3DataSourceDataTypeS3prefix,
 	}
 }
 
@@ -125810,12 +125814,6 @@ const (
 	// AppTypeTensorBoard is a AppType enum value
 	AppTypeTensorBoard = "TensorBoard"
 
-	// AppTypeVscode is a AppType enum value
-	AppTypeVscode = "VSCode"
-
-	// AppTypeSavitur is a AppType enum value
-	AppTypeSavitur = "Savitur"
-
 	// AppTypeCodeEditor is a AppType enum value
 	AppTypeCodeEditor = "CodeEditor"
 
@@ -125825,23 +125823,11 @@ const (
 	// AppTypeRstudioServerPro is a AppType enum value
 	AppTypeRstudioServerPro = "RStudioServerPro"
 
-	// AppTypeRsession is a AppType enum value
-	AppTypeRsession = "RSession"
-
 	// AppTypeRsessionGateway is a AppType enum value
 	AppTypeRsessionGateway = "RSessionGateway"
 
 	// AppTypeCanvas is a AppType enum value
 	AppTypeCanvas = "Canvas"
-
-	// AppTypeDatasetManager is a AppType enum value
-	AppTypeDatasetManager = "DatasetManager"
-
-	// AppTypeSageMakerLite is a AppType enum value
-	AppTypeSageMakerLite = "SageMakerLite"
-
-	// AppTypeLocal is a AppType enum value
-	AppTypeLocal = "Local"
 )
 
 // AppType_Values returns all elements of the AppType enum
@@ -125851,17 +125837,11 @@ func AppType_Values() []string {
 		AppTypeKernelGateway,
 		AppTypeDetailedProfiler,
 		AppTypeTensorBoard,
-		AppTypeVscode,
-		AppTypeSavitur,
 		AppTypeCodeEditor,
 		AppTypeJupyterLab,
 		AppTypeRstudioServerPro,
-		AppTypeRsession,
 		AppTypeRsessionGateway,
 		AppTypeCanvas,
-		AppTypeDatasetManager,
-		AppTypeSageMakerLite,
-		AppTypeLocal,
 	}
 }
 
@@ -132383,12 +132363,6 @@ const (
 	// StudioLifecycleConfigAppTypeKernelGateway is a StudioLifecycleConfigAppType enum value
 	StudioLifecycleConfigAppTypeKernelGateway = "KernelGateway"
 
-	// StudioLifecycleConfigAppTypeVscode is a StudioLifecycleConfigAppType enum value
-	StudioLifecycleConfigAppTypeVscode = "VSCode"
-
-	// StudioLifecycleConfigAppTypeSavitur is a StudioLifecycleConfigAppType enum value
-	StudioLifecycleConfigAppTypeSavitur = "Savitur"
-
 	// StudioLifecycleConfigAppTypeCodeEditor is a StudioLifecycleConfigAppType enum value
 	StudioLifecycleConfigAppTypeCodeEditor = "CodeEditor"
 
@@ -132401,8 +132375,6 @@ func StudioLifecycleConfigAppType_Values() []string {
 	return []string{
 		StudioLifecycleConfigAppTypeJupyterServer,
 		StudioLifecycleConfigAppTypeKernelGateway,
-		StudioLifecycleConfigAppTypeVscode,
-		StudioLifecycleConfigAppTypeSavitur,
 		StudioLifecycleConfigAppTypeCodeEditor,
 		StudioLifecycleConfigAppTypeJupyterLab,
 	}