How To Fix 00399 - Batch input: Unknown return code

00399 - Overview

• Message type: E = Error

• Message class: 00 -

• Message number: 399

• Message text: Batch input: Unknown return code

What causes this issue?

Internal error of batch input monitoring
Adapt PERFORM SEND_MSG

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Note the error situation and contact your system administrator.

Error message extract from SAP system. Copyright SAP SE.

00399 - Details

• The SAP error message "00399 Batch input: Unknown return code" typically occurs during batch input processing when the system encounters an unexpected return code that it does not recognize. This can happen in various scenarios, such as during data uploads, batch input sessions, or when using transaction codes that involve batch processing.
  Causes:
  
  Incorrect Batch Input Session: The batch input session may have been created incorrectly or may contain invalid data.
  System 
  Configuration Issues: There may be configuration issues in the SAP system that lead to unexpected return codes.
  Authorization Problems: The user executing the batch input may not have the necessary authorizations to perform the actions defined in the batch input session.
  Program Errors: There could be bugs or errors in the custom programs or standard SAP programs that handle the batch input.
  Data Issues: The data being processed may not conform to the expected format or may contain invalid entries.
  
  Solutions:
  
  Check Batch Input Session: Review