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

BKK_PO_PROXY_MSG023 - Overview

• 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

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To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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BKK_PO_PROXY_MSG023 - Details

• 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