After careful consideration, we have made the decision to close new customer access to **AWS Mainframe Modernization self-managed experience**, effective June 30, 2026. Existing customers can continue to use the service as normal. AWS continues to invest in security and availability improvements for AWS Mainframe Modernization self-managed experience, but we do not plan to introduce new features. For more information, see [AWS Mainframe Modernization availability change](https://docs.aws.amazon.com/m2/latest/userguide/mainframe-modernization-availability-change.html). 

**AWS Mainframe Modernization Service (Managed Runtime Environment experience)** is no longer open to new customers. 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](https://docs.aws.amazon.com/m2/latest/userguide/mainframe-modernization-availability-change.html). 

# AWS Transform for mainframe Runtime Error Codes related to ADABAS
<a name="ba-runtime-error-codes-n"></a>

ADABAS-specific error codes, prefixed with `BA-N`.

## ADASTRIP Utility Error Codes
<a name="adastrip-utility-errors"></a>


| Key | Severity | Text | Additional details | 
| --- | --- | --- | --- | 
| BA-N1000 | Fatal | Invalid ADASTRIP Field entry: expected type 'FieldFormat' but received '%s'. | Field series are not supported by ADASTRIP (Ex: 'AA-AD'). |