# GdgAttributes
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**Important**  
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The required attributes for a generation data group data set. A generation data set is one of a collection of successive, historically related, catalogued data sets that together are known as a generation data group (GDG). Use this structure when you want to import a GDG. For more information on GDG, see [Generation data sets](https://www.ibm.com/docs/en/zos/2.3.0?topic=guide-generation-data-sets).

## Contents
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 ** limit **   <a name="m2-Type-GdgAttributes-limit"></a>
The maximum number of generation data sets, up to 255, in a GDG.  
Type: Integer  
Required: No

 ** rollDisposition **   <a name="m2-Type-GdgAttributes-rollDisposition"></a>
The disposition of the data set in the catalog.  
Type: String  
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/m2-2021-04-28/GdgAttributes) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/m2-2021-04-28/GdgAttributes) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/m2-2021-04-28/GdgAttributes)