AlternateKey - AWS Mainframe Modernization

AlternateKey

Important

AWS Mainframe Modernization Service (Managed Runtime Environment experience) will no longer be open to new customers starting on November 7, 2025. If you would like to use the service, please sign up prior to November 7, 2025. For capabilities similar to AWS Mainframe Modernization Service (Managed Runtime Environment experience) explore AWS Mainframe Modernization Service (Self-Managed Experience). Existing customers can continue to use the service as normal. For more information, see AWS Mainframe Modernization availability change.

Defines an alternate key. This value is optional. A legacy data set might not have any alternate key defined but if those alternate keys definitions exist, provide them, as some applications will make use of them.

Contents

length

A strictly positive integer value representing the length of the alternate key.

Type: Integer

Required: Yes

offset

A positive integer value representing the offset to mark the start of the alternate key part in the record byte array.

Type: Integer

Required: Yes

allowDuplicates

Indicates whether the alternate key values are supposed to be unique for the given data set.

Type: Boolean

Required: No

name

The name of the alternate key.

Type: String

Required: No

See Also

For more information about using this API in one of the language-specific AWS SDKs, see the following: