How To Fix B1511 - The BAPI must have a RETURN parameter

B1511 - Overview

• Message type: E = Error

• Message class: B1 - ALE group messages

• Message number: 511

• Message text: The BAPI must have a RETURN parameter

What causes this issue?

Each BAPI must have a Return parameter that references the type &v1&,
&v2&, &v3& or &v4&. This parameter does not exist. Generation has been
terminated.

How to fix this error?

Add a Return parameter to the BAPI.

Error message extract from SAP system. Copyright SAP SE.

B1511 - Details

• The SAP error message B1511 indicates that a Business Application Programming Interface (BAPI) you are trying to call does not have a RETURN parameter defined. The RETURN parameter is essential for BAPIs as it is used to return messages, including success or error messages, back to the calling program.
  
  Cause:
  
  Missing RETURN Parameter: The BAPI you are trying to call does not have a RETURN parameter defined in its interface.
  Incorrect BAPI Usage: You may be using a BAPI that is not designed to return messages or is not implemented correctly.
  Custom BAPI Issues: If you are using a custom BAPI, it may not have been developed with a RETURN parameter.
  
  
  Solution:
  
  Check BAPI Definition: Verify the BAPI definition in the SAP system. You can do this by using transaction code SE37 (Function Module) or SE80 (Object Navigator) to check the BAPI's interface.
  Add RETURN Parameter: If you are developing a custom BAPI, ensure that you include