How To Fix /SCWM/RF_EN456 - Function module &1 called with illegal parameters

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCWM/RF_EN -

• Message number: 456

• Message text: Function module &1 called with illegal parameters

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SCWM/RF_EN456 - Function module &1 called with illegal parameters ?

  The SAP error message /SCWM/RF_EN456 Function module &1 called with illegal parameters typically occurs in the context of the SAP Extended Warehouse Management (EWM) system, particularly when dealing with radio frequency (RF) transactions. This error indicates that a function module was called with parameters that are not valid or do not meet the expected criteria.
  Causes:
  
  Invalid Parameters: The function module is being called with parameters that are either missing, incorrect, or not in the expected format.
  Configuration Issues: There may be issues with the configuration of the RF framework or the specific function module being called.
  Data Integrity Issues: The data being processed may not meet the necessary conditions, such as missing master data or incorrect document statuses.
  Custom Code: If there are custom enhancements or modifications in the RF process, they may be causing the function module to be called incorrectly.
  
  Solutions:
  
  Check Parameters: Review the parameters being passed to the function module. Ensure that all required parameters are provided and that they are in the correct format.
  Debugging: Use the SAP debugger to trace the execution of the RF transaction and identify where the illegal parameters are being set. This can help pinpoint the exact cause of the error.
  Review Configuration: Check the configuration settings for the RF framework and the specific function module. Ensure that all necessary settings are correctly configured.
  Data Validation: Validate the data being processed to ensure that it meets all necessary criteria. This includes checking for missing master data, document statuses, and other relevant information.
  Consult Documentation: Refer to SAP documentation or notes related to the specific function module to understand its requirements and constraints.
  Check for Updates: Ensure that your SAP system is up to date with the latest support packages and notes, as there may be fixes for known issues related to this error.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes in EWM, such as /SCWM/RFUI for RF user interface settings.
  SAP Notes: Search for SAP Notes related to the specific function module and error message for additional guidance and potential fixes.
  Community Forums: Engage with SAP community forums or support channels to see if other users have encountered similar issues and how they resolved them.
  
  If the issue persists after trying the above solutions, it may be beneficial to reach out to SAP support for further assistance, providing them with detailed information about the error and the context in which it occurs.