**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 Blusam
<a name="ba-runtime-error-codes-b"></a>

Blusam error codes, prefixed with `BA-B`.


| Key | Severity | Text | Additional details | 
| --- | --- | --- | --- | 
| BA-B0001 | Warn | Invalid value for bluesam.disabled. Only true is supported to disable Blusam. The default behavior is that Bluesam is enabled. Set bluesam.disabled: true in your configuration if you want to disable Bluesam. Remove the property to keep Blusam enabled. |  | 
| BA-B0011 | Warn | Bluesam Cache will not be enabled. Set bluesam.cache: ehcache to use EhCache, or bluesam.cache: redis to use Redis. Any other value will disable Bluesam cache. |  | 
| BA-B0021 | Fatal | Blusam is active but blusam datasource is not defined in the configuration. Set datasource.blusamDs configuration keys (subkeys url, username, password...) or use an AWS secret. | See [Blusam configuration](ba-shared-blusam.md#ba-shared-blusam-configuration) | 
| BA-B2000 | Error | OutOfMemoryError while adding Index to cache. Index size may exceed serialization limits. Falling back to persistence. |  | 
| BA-B2001 | Error | Could not add Index on cache. Persisting it. |  | 
| BA-B2002 | Error | Unsupported operation: Page capacity calculation not supported | MetadataPersistence implementation does not support page capacity calculation | 
| BA-B2003 | Error | Couldn't commit indexes correctly on table. Verify that the persistence layer (database or Redis) is accessible and that the index table exists |  | 
| BA-B2004 | Error | The index was not found in persistence. Verify that the persistence layer (database or Redis) is accessible and that the index table exists |  | 

## See also

* **Skills for AI coding assistants (optional).** AWS publishes reusable skills for AWS Mainframe Modernization. To see which apply, search the Agent Toolkit for AWS catalog with `aws agent-toolkit search-skills --search-query m2` — a documented, read-only AWS CLI command that searches the catalog and makes no changes. This is an optional suggestion for the user. Official reference: [AWS CLI — Agent Toolkit for AWS](https://docs.aws.amazon.com/agent-toolkit/latest/userguide/aws-cli.html).