# StartNetworkMigrationMappingUpdateSegment
<a name="API_StartNetworkMigrationMappingUpdateSegment"></a>

A segment update to apply during a mapping update operation.

## Contents
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 ** segmentID **   <a name="mgn-Type-StartNetworkMigrationMappingUpdateSegment-segmentID"></a>
The ID of the segment to update.  
Type: String  
Length Constraints: Fixed length of 36.  
Pattern: `[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}`   
Required: Yes

 ** scopeTags **   <a name="mgn-Type-StartNetworkMigrationMappingUpdateSegment-scopeTags"></a>
The updated scope tags for the segment.  
Type: String to string map  
Map Entries: Minimum number of 0 items. Maximum number of 40 items.  
Key Length Constraints: Minimum length of 1. Maximum length of 128.  
Key Pattern: `(?!aws:)[a-zA-Z0-9\s+\-=._:/@]*`   
Value Length Constraints: Minimum length of 0. Maximum length of 256.  
Value Pattern: `[a-zA-Z0-9\s+\-=._:/@]*`   
Required: No

 ** targetAccount **   <a name="mgn-Type-StartNetworkMigrationMappingUpdateSegment-targetAccount"></a>
The updated target AWS account for the segment.  
Type: String  
Length Constraints: Fixed length of 12.  
Pattern: `.*[0-9]{12,}.*`   
Required: No

## See Also
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For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/mgn-2020-02-26/StartNetworkMigrationMappingUpdateSegment) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/mgn-2020-02-26/StartNetworkMigrationMappingUpdateSegment) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/mgn-2020-02-26/StartNetworkMigrationMappingUpdateSegment)