How To Fix 37591 - Internal error: Illegal parameter & from function module &

SAP Error Message - Details

• Message type: E = Error

• Message class: 37 - Screen Painter

• Message number: 591

• Message text: Internal error: Illegal parameter & from function module &

What causes this issue?

An illegal parameter value was used to call the specified function
module.

System Response

Processing terminated.

How to fix this error?

Correct the parameter value with the help of the function module
documentation.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 37591 - Internal error: Illegal parameter & from function module & ?

  The SAP error message 37591, which states "Internal error: Illegal parameter & from function module &," typically indicates that there is an issue with the parameters being passed to a function module in SAP. This error can arise due to various reasons, including:
  Causes:
  
  Incorrect Parameter Values: The parameters being passed to the function module may not conform to the expected data types or formats.
  Configuration Issues: There may be configuration settings in the system that are not set up correctly, leading to the function module receiving unexpected values.
  Custom Code: If there is custom ABAP code that calls the function module, it may be passing incorrect or unexpected parameters.
  Data Consistency Issues: There may be inconsistencies in the data being processed, such as missing or invalid entries in the database.
  SAP Notes: There may be known issues with the specific version of SAP you are using, which could be addressed in SAP Notes.
  
  Solutions:
  
  Check Parameter Values: Review the parameters being passed to the function module. Ensure that they are of the correct type and within the expected range.
  Debugging: Use the ABAP debugger to step through the code and identify where the illegal parameter is being set. This can help pinpoint the source of the issue.
  Review Custom Code: If there is custom code involved, review it for any potential issues with how parameters are being constructed or passed.
  Check Configuration: Verify that all relevant configuration settings in the system are correct and complete.
  Consult SAP Notes: Search the SAP Support Portal for any relevant SAP Notes that may address this specific error. Applying a relevant note may resolve the issue.
  System Logs: Check the system logs (transaction SLG1) for any additional error messages or warnings that may provide more context about the issue.
  
  Related Information:
  
  Function Module Documentation: Review the documentation for the specific function module mentioned in the error message to understand the expected parameters and their formats.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found.
  SAP Support: If the issue persists and you have access to SAP Support, consider opening a support ticket for further assistance.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution.