How To Fix WXPO000 - ******* Messages for RFC return parameters **************************

SAP Error Message - Details

• Message type: E = Error

• Message class: WXPO - Messages for development class WIS_PLAN_O

• Message number: 000

• Message text: ******* Messages for RFC return parameters **************************

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WXPO000 - ******* Messages for RFC return parameters ************************** ?

  The SAP error message **WXPO000 *** Messages for RFC return parameters **" typically appears in the context of RFC (Remote Function Call)** communications, especially when dealing with ALE/IDoc processing or other remote-enabled function modules.
  
  Cause
  
  
  General Meaning:
  
  The message WXPO000 is a generic informational or warning message related to the return parameters of an RFC call. It indicates that there are messages (errors, warnings, or information) contained in the return parameters of an RFC function module call.
  
  
  Specific Cause:
  
  This message usually appears when an RFC-enabled function module returns messages in its RETURN parameter (or similar structure) after execution. The messages could be errors, warnings, or informational messages generated during the remote call.
  
  
  Context:  
  
  Often seen in ALE/IDoc processing, where the system calls a remote function module and the remote system returns messages in the RETURN parameter.
  It can also appear during BAPI calls or other RFC communications where the return structure contains messages.
  The message itself is a container or header message indicating that there are messages in the return parameter, not the actual error.
  
  
  
  
  Solution
  
  
  Check the Return Parameter Messages:  
  
  The key step is to analyze the actual messages contained in the RFC return parameter (usually a table or structure named RETURN or RETURN_PARAM).
  These messages will provide detailed information about what went wrong or what warnings were issued during the remote call.
  
  
  
  Debug or Log the RFC Call:  
  
  Use transaction SM59 to test the RFC destination.
  Use transaction SM58 to check for any transactional RFC (tRFC/qRFC) errors.
  Use transaction WE02/WE05 to check IDoc status and error messages if the context is ALE/IDoc.
  Debug the function module or check the logs to see the exact messages returned.
  
  
  
  Correct the Underlying Issue:  
  
  Based on the detailed messages in the return parameter, fix the root cause. This could be:
  
  Missing or incorrect data in the input parameters.
  Authorization issues.
  Configuration problems in the remote system.
  Data inconsistencies or validation errors.
  
  
  
  
  
  Handle Messages Properly in Code:  
  
  If you are developing or customizing, ensure your ABAP code properly handles the messages returned in the RFC call.
  Display or log the messages for user awareness or troubleshooting.
  
  
  
  
  Related Information
  
  
  Message Class WXPO:
  
  This message class is related to ALE/IDoc processing and RFC communication.
  
  
  Common Transactions:
  
  SM59: RFC Destinations - test and maintain RFC connections.
  SM58: Transactional RFC Monitor - check for failed tRFC calls.
  WE02 / WE05: IDoc Display - check IDoc status and error messages.
  SE37: Function Module Test - test RFC-enabled function modules.
  
  
  
  Typical Return Parameter Structure:
  
  Many RFC-enabled function modules return a parameter named RETURN of type BAPIRET2 or similar, which contains fields like:
  
  TYPE (S=Success, E=Error, W=Warning, I=Info)
  ID (Message class)
  NUMBER (Message number)
  MESSAGE (Text of the message)
  
  
  
  Example:
  
  If the return parameter contains an error message like:
  TYPE = 'E'
  ID = 'WXPO'
  NUMBER = '001'
  MESSAGE = 'Material number does not exist'
  Then the root cause is that the material number sent in the RFC call is invalid.
  
  
  
  Summary
  
  
  
  Aspect
  Description
  
  
  
  
  Cause
  Messages returned in the RFC return parameter indicating errors/warnings/info from remote call.
  
  
  Solution
  Analyze the messages in the return parameter, identify and fix the root cause, check RFC destinations and IDocs if relevant.
  
  
  Related Info
  Use SM59, SM58, WE02/WE05, SE37; message class WXPO relates to ALE/IDoc and RFC communication.
  
  
  
  
  If you provide the exact messages contained in the return parameter, I can help interpret them further.