**AWS Mainframe Modernization self-managed experience** is no longer open to new customers. For capabilities similar to AWS Mainframe Modernization self-managed experience, explore capabilities from vendor-direct offerings and from AWS Transform. 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 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 Batches
<a name="ba-runtime-error-codes-c"></a>

Batches error codes, prefixed with `BA-C`.


| Key | Severity | Text | Additional details | 
| --- | --- | --- | --- | 
| BA-C1010 | Warn | Job script context is null, checkpoint will proceed without script context. |  | 
| BA-C1011 | Warn | Job script context does not implement Serializable, checkpoint will proceed without script context. |  |