How To Fix RMSL137 - Interface was called without external key

SAP Error Message - Details

• Message type: E = Error

• Message class: RMSL - Labeling Application Messages

• Message number: 137

• Message text: Interface was called without external key

What causes this issue?

A BAdI interface was not implemented correctly.

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?

Check the data supply to the interfaces of the BAdI implementations.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RMSL137 - Interface was called without external key ?

  The SAP error message RMSL137, which states "Interface was called without external key," typically occurs in the context of the SAP Retail Management System (RMS) or similar modules where external keys are required for certain operations. This error indicates that a function or interface was invoked without providing the necessary external key, which is essential for identifying the specific record or transaction being processed.
  Cause:
  
  Missing External Key: The most common cause of this error is that the external key parameter, which is required for the function call, is either missing or not being passed correctly.
  Incorrect Configuration: There may be issues with the configuration of the interface or the way it is set up to handle external keys.
  Programming Errors: If custom code or enhancements are involved, there may be programming errors that lead to the external key not being populated or passed correctly.
  Data Integrity Issues: If the data being processed does not have a valid external key, this error can occur.
  
  Solution:
  
  Check Function Call: Review the code or configuration where the interface is being called. Ensure that the external key is being passed correctly and is not null or empty.
  Validate External Key: Ensure that the external key being used is valid and corresponds to an existing record in the system. You may need to check the relevant tables or data sources.
  Debugging: If you have access to the development environment, use debugging tools to trace the execution of the code and identify where the external key is being lost or not set.
  Review Configuration: Check the configuration settings for the interface in question. Ensure that all required fields, including the external key, are properly configured.
  Consult Documentation: Refer to SAP documentation or notes related to the specific interface you are working with to ensure that you are following the correct procedures.
  Contact SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP support for assistance. They may have additional insights or patches available.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on similar issues.
  Transaction Codes: Familiarize yourself with transaction codes related to the interface you are working with, as they may provide additional insights or tools for troubleshooting.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the cause of the RMSL137 error and implement a solution to resolve it.