How To Fix RN100 - Function module & not in cross reference

SAP Error Message - Details

• Message type: E = Error

• Message class: RN - Rename Tool message

• Message number: 100

• Message text: Function module & not in cross reference

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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Smart SAP Assistant

• What is the cause and solution for SAP error message RN100 - Function module & not in cross reference ?

  The SAP error message RN100, which states "Function module & not in cross reference," typically occurs when a function module is being called or referenced in a program, but it is not found in the system's cross-reference table. This can happen for several reasons, including:
  Causes:
  
  Function Module Not Activated: The function module may not be activated or may have been deleted.
  Transport Issues: If the function module was recently transported from another system, it may not have been properly imported or activated in the target system.
  Naming Issues: There could be a typo or incorrect naming in the function module call.
  Authorization Issues: The user may not have the necessary authorizations to access the function module.
  Development Environment: If you are working in a development environment, the function module may not be available in the current client.
  
  Solutions:
  
  Check Function Module Existence: Use transaction SE37 (Function Builder) to check if the function module exists and is active.
  Activate the Function Module: If the function module exists but is not active, activate it.
  Transport Check: If the function module was transported, ensure that the transport request was successfully imported and that the function module is active in the target system.
  Correct Naming: Verify that the function module name is spelled correctly in the code where it is being called.
  Authorization Check: Ensure that the user has the necessary authorizations to execute the function module.
  Client Check: Make sure you are in the correct client where the function module is available.
  
  Related Information:
  
  Transaction Codes: 
  
  SE37: Function Builder
  SE80: Object Navigator
  SE11: Data Dictionary
  
  
  Debugging: If the error occurs during runtime, you can use the debugger to trace the execution and identify where the function module is being called.
  SAP Notes: Check SAP Notes for any known issues or patches related to the specific function module or error message.
  Documentation: Review the documentation for the function module to understand its purpose and usage.
  
  If the issue persists after trying the above solutions, it may be helpful to consult with your SAP Basis team or SAP support for further assistance.