How To Fix QM405 - The reference structure of &1 parameter must be &2, not &3

SAP Error Message - Details

• Message type: E = Error

• Message class: QM - Messages for quality notifications

• Message number: 405

• Message text: The reference structure of &1 parameter must be &2, not &3

What causes this issue?

The interface of the function module you entered is not compatible with
the interface of the sample function module.

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 interface of the function module you entered and correct the
reference structure.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message QM405 - The reference structure of &1 parameter must be &2, not &3 ?

  The SAP error message QM405 indicates that there is a mismatch in the expected structure of a parameter in a Quality Management (QM) context. Specifically, it suggests that the reference structure for a certain parameter (denoted as &1) is expected to be of a certain type (denoted as &2), but the system has encountered a different type (denoted as &3).
  Cause:
  This error typically arises due to one of the following reasons:
  
  Data Type Mismatch: The parameter being passed does not match the expected data type or structure defined in the system.
  Configuration Issues: There may be a misconfiguration in the Quality Management module or related settings that define how parameters should be structured.
  Custom Development: If there are custom programs or enhancements, they may not be adhering to the expected parameter structures defined by SAP.
  Incorrect Usage: The function module or method being called may be used incorrectly, leading to the wrong parameter being passed.
  
  Solution:
  To resolve the QM405 error, you can take the following steps:
  
  
  Check Parameter Definitions: Review the definitions of the parameters in the function module or method you are using. Ensure that the data types and structures match what is expected.
  
  
  Review Custom Code: If you are using custom code, check for any discrepancies in how parameters are being passed. Ensure that the correct types are being used.
  
  
  Debugging: Use the SAP debugger to trace the execution of the program and identify where the mismatch occurs. This can help pinpoint the exact location and cause of the error.
  
  
  Consult Documentation: Refer to the SAP documentation for the specific function module or method to understand the expected parameter structures.
  
  
  Configuration Review: If the issue is related to configuration, review the settings in the Quality Management module to ensure they are set up correctly.
  
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error message or provide guidance on similar issues.
  
  
  Testing: After making changes, conduct thorough testing to ensure that the error is resolved and that the system behaves as expected.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes in the QM module, such as QA01 (Create Inspection Lot), QA02 (Change Inspection Lot), and QA03 (Display Inspection Lot).
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and what solutions they have found.
  SAP Help Portal: Utilize the SAP Help Portal for detailed information on Quality Management processes and error handling.
  
  By following these steps, you should be able to identify and resolve the cause of the QM405 error in your SAP system.