# TransitGatewayRouteTableAttachment
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Describes a transit gateway route table attachment.

## Contents
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 ** Attachment **   <a name="networkmanager-Type-TransitGatewayRouteTableAttachment-Attachment"></a>
Describes a core network attachment.  
Type: [Attachment](API_Attachment.md) object  
Required: No

 ** PeeringId **   <a name="networkmanager-Type-TransitGatewayRouteTableAttachment-PeeringId"></a>
The ID of the peering attachment.  
Type: String  
Length Constraints: Minimum length of 0. Maximum length of 50.  
Pattern: `^peering-([0-9a-f]{8,17})$`   
Required: No

 ** TransitGatewayRouteTableArn **   <a name="networkmanager-Type-TransitGatewayRouteTableAttachment-TransitGatewayRouteTableArn"></a>
The ARN of the transit gateway attachment route table. For example, `"TransitGatewayRouteTableArn": "arn:aws:ec2:us-west-2:123456789012:transit-gateway-route-table/tgw-rtb-9876543210123456"`.  
Type: String  
Length Constraints: Minimum length of 0. Maximum length of 500.  
Pattern: `[\s\S]*`   
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/networkmanager-2019-07-05/TransitGatewayRouteTableAttachment) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/networkmanager-2019-07-05/TransitGatewayRouteTableAttachment) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/networkmanager-2019-07-05/TransitGatewayRouteTableAttachment)