How To Fix SWF_RUN009 - Function &1 cannot be called using an external RFC

SAP Error Message - Details

• Message type: E = Error

• Message class: SWF_RUN - Workflow Runtime System

• Message number: 009

• Message text: Function &1 cannot be called using an external RFC

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 SWF_RUN009 - Function &1 cannot be called using an external RFC ?

  The SAP error message SWF_RUN009 indicates that a function module (FM) cannot be called using an external Remote Function Call (RFC). This typically occurs when the function module is not designed to be called remotely, which can be due to various reasons such as security restrictions, the function module being marked as "not remote-enabled," or it being a local function that is not intended for external access.
  Causes:
  
  Function Module Not Remote-Enabled: The function module is not marked as RFC-enabled in its attributes.
  Security Restrictions: The function may have security settings that prevent it from being called externally.
  Local Functionality: The function module may be designed for internal use only and not intended for external calls.
  Incorrect RFC Destination: The RFC destination being used may not be configured correctly or may not have the necessary permissions.
  
  Solutions:
  
  
  Check Function Module Attributes:
  
  Go to transaction SE37 (Function Builder) and check the attributes of the function module in question.
  Ensure that the "Remote-Enabled Module" checkbox is checked.
  
  
  
  Review Security Settings:
  
  Check if there are any authorization checks or security settings that might be preventing the function from being called externally.
  Ensure that the user making the RFC call has the necessary authorizations.
  
  
  
  Use an Alternative Function Module:
  
  If the function module is not meant to be called remotely, look for an alternative RFC-enabled function module that provides similar functionality.
  
  
  
  Check RFC Destination:
  
  Verify the configuration of the RFC destination in transaction SM59.
  Ensure that the destination is correctly set up and that the user credentials have the necessary permissions.
  
  
  
  Consult Documentation:
  
  Review the SAP documentation or notes related to the specific function module to understand its intended use and any limitations.
  
  
  
  Contact SAP Support:
  
  If the issue persists and you cannot find a resolution, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SE37: Function Builder to check and modify function modules.
  SM59: RFC Destinations to manage and configure RFC connections.
  SU53: To check authorization issues after an error occurs.
  
  
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to the function module or the error message.
  
  
  By following these steps, you should be able to diagnose and resolve the SWF_RUN009 error effectively.