How To Fix SCRL558 - Optional value of param. &1 in meth. &2 was changed in an incomp. way

SAP Error Message - Details

• Message type: E = Error

• Message class: SCRL - Messages for custom resuse libraries

• Message number: 558

• Message text: Optional value of param. &1 in meth. &2 was changed in an incomp. way

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SCRL558 - Optional value of param. &1 in meth. &2 was changed in an incomp. way ?

  The SAP error message SCRL558 indicates that there is an issue with the optional parameter of a method in a class or function module. Specifically, it suggests that the optional value of a parameter has been changed in an incompatible way, which can lead to runtime errors or unexpected behavior in the application.
  Cause:
  
  Incompatible Changes: The most common cause of this error is that the definition of a method has been changed in a way that is not backward compatible. For example, if a parameter that was previously optional is now required, or if the data type of the parameter has changed.
  Version Mismatch: If you are using a different version of a class or function module than what was originally intended, this can lead to discrepancies in parameter definitions.
  Custom Code: If there are custom implementations or enhancements that modify the behavior of standard methods, these changes may not align with the expected parameter definitions.
  
  Solution:
  
  Check Method Definition: Review the method definition in the class or function module to ensure that the parameters are defined correctly and that any changes made are compatible with existing calls to the method.
  Update Calls: If the method definition has changed, update all calls to this method throughout your codebase to ensure they comply with the new parameter definitions.
  Consult Documentation: Refer to the SAP documentation or release notes for any changes made to the method in question, especially if you have recently upgraded your SAP system.
  Testing: After making changes, thoroughly test the affected functionality to ensure that the error is resolved and that no new issues have been introduced.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or fixes related to the specific method or class you are working with.
  Debugging: Use the ABAP debugger to trace the execution of the method and identify where the incompatible parameter is being passed.
  Version Control: If you are working in a development environment, consider using version control to track changes to method definitions and calls, which can help identify when the issue was introduced.
  
  If the problem persists after following these steps, consider reaching out to SAP support or consulting with a developer who has experience with the specific module or functionality you are working with.