How To Fix BKK_PO_PROXY_MSG023 - Format error when calling up method &1 in method &2.

SAP Error Message - Details

• Message type: E = Error

• Message class: BKK_PO_PROXY_MSG - Message Class for Payment Order Proxy

• Message number: 023

• Message text: Format error when calling up method &1 in method &2.

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 BKK_PO_PROXY_MSG023 - Format error when calling up method &1 in method &2. ?

  The SAP error message BKK_PO_PROXY_MSG023 indicates a format error when calling a method in a proxy interface. This typically occurs in the context of SAP's Business Communication Services (BCS) or when dealing with web services and proxy calls.
  Cause:
  
  Data Format Issues: The data being sent to the method does not match the expected format. This could be due to incorrect data types, missing fields, or improperly structured data.
  Mapping Errors: If there are mappings between different data structures (like between an XML structure and an ABAP structure), any discrepancies can lead to format errors.
  Version Mismatch: If the proxy interface has been updated but the calling program has not been adjusted accordingly, this can lead to format errors.
  Configuration Issues: Incorrect configuration in the SAP system related to the proxy settings or the service definition can also lead to this error.
  
  Solution:
  
  Check Data Format: Review the data being sent to the method. Ensure that it adheres to the expected format, including data types and required fields.
  Review Proxy Interface: Check the definition of the proxy interface and ensure that the method signatures match what is being called. If there have been recent changes, ensure that the calling program is updated accordingly.
  Debugging: Use debugging tools to trace the execution and identify where the format error occurs. This can help pinpoint the exact data or method causing the issue.
  Check Mappings: If there are mappings involved, verify that they are correctly defined and that the data being passed conforms to the expected structure.
  Consult Documentation: Review the SAP documentation for the specific methods and interfaces being used to ensure compliance with the expected formats.
  Test with Sample Data: If possible, test the method with known good data to see if the error persists. This can help isolate whether the issue is with the data being sent or with the method itself.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the specific error message or the methods being used.
  Transaction Codes: Use transaction codes like SOAMANAGER to manage web service configurations and check for any issues in the service definitions.
  Community Forums: Engage with SAP community forums or support channels for additional insights or similar cases encountered by other users.
  
  If the issue persists after following these steps, it may be beneficial to reach out to SAP support for further assistance.