How To Fix WPRO_XI_PROXY215 - Error calling function module &1; unexpected return value &2

SAP Error Message - Details

• Message type: E = Error

• Message class: WPRO_XI_PROXY - Messages Service Processing Retail Event

• Message number: 215

• Message text: Error calling function module &1; unexpected return value &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WPRO_XI_PROXY215 - Error calling function module &1; unexpected return value &2 ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WPRO_XI_PROXY215: Error calling function module &1; unexpected return value &2
  
  Cause:
  This error occurs during the execution of a workflow step that involves calling a remote function module (RFC) or a proxy function module in SAP PI/PO (Process Integration/Process Orchestration). The workflow expects a certain return value or status from the function module call, but it receives an unexpected or error return value instead.
  Common causes include:
  
  The called function module (or proxy) returned an error or an unexpected status.
  Communication issues between the workflow runtime and the remote system.
  Incorrect or missing parameters passed to the function module.
  The function module itself encountered an error during execution.
  Authorization or system configuration issues preventing successful execution.
  Network or system connectivity problems.
  
  
  Solution:
  To resolve this error, follow these steps:
  
  
  Check the Detailed Error Log:
  
  Look at the workflow log and system log (transaction SWI1, SM21, ST22) to find more detailed error messages related to the function module call.
  Identify the exact function module name (&1) and the unexpected return value (&2).
  
  
  
  Analyze the Function Module:
  
  Use transaction SE37 to test the function module manually with the same input parameters.
  Check if the function module returns an error or unexpected result.
  Review the function module code or proxy implementation for possible issues.
  
  
  
  Check Parameters and Data:
  
  Verify that the input parameters passed from the workflow to the function module are correct and complete.
  Ensure that the data types and values conform to the expected format.
  
  
  
  Check System Connectivity:
  
  If the function module is remote, verify RFC destination configuration (SM59).
  Test the RFC connection to ensure it is working properly.
  
  
  
  Authorization Checks:
  
  Ensure the user executing the workflow has the necessary authorizations to call the function module.
  
  
  
  Review Workflow Configuration:
  
  Check the workflow step configuration that calls the function module.
  Ensure the return value handling logic is correct and can handle all possible return values.
  
  
  
  Apply SAP Notes / Patches:
  
  Search for SAP Notes related to the function module or workflow error.
  Apply any relevant patches or corrections.
  
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SWI1 - Workflow log
  SM59 - RFC Destinations
  SE37 - Function Module Test
  ST22 - Dump Analysis
  SM21 - System Log
  
  
  
  SAP Notes:
  
  Search SAP Support Portal for notes related to WPRO_XI_PROXY215 or the specific function module name.
  
  
  
  Documentation:
  
  SAP Workflow documentation on function module calls.
  SAP PI/PO proxy communication guides.
  
  
  
  
  If you provide the actual function module name and return value, I can help you analyze the specific case further.