How To Fix UXS204 - Internal error: Key of an XML proxy object is incomplete

SAP Error Message - Details

• Message type: E = Error

• Message class: UXS - Messages Package UXS

• Message number: 204

• Message text: Internal error: Key of an XML proxy object is incomplete

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message UXS204 - Internal error: Key of an XML proxy object is incomplete ?

  The SAP error message UXS204, which states "Internal error: Key of an XML proxy object is incomplete," typically occurs in the context of SAP's XML-based services, particularly when dealing with proxy objects in SAP PI/PO (Process Integration/Process Orchestration) or when using web services.
  Cause:
  The error usually arises due to one of the following reasons:
  
  
  Incomplete Key Definition: The key fields required for the XML proxy object are not fully defined or are missing. This can happen if the data being processed does not include all the necessary identifiers that the system expects.
  
  
  Mapping Issues: If there is a problem in the mapping of the XML data to the corresponding structure in SAP, it can lead to incomplete keys being passed to the proxy object.
  
  
  Configuration Errors: Incorrect configuration in the service interface or the proxy settings can lead to this error. This includes issues in the service definition or the way the proxy is set up in the SAP system.
  
  
  Data Quality Issues: The incoming XML data may not conform to the expected schema, leading to missing key fields.
  
  
  Solution:
  To resolve the UXS204 error, you can take the following steps:
  
  
  Check the XML Structure: Ensure that the XML data being sent to the proxy contains all the required key fields. Validate the XML against the expected schema.
  
  
  Review Mapping: If you are using a mapping tool (like SAP PI/PO), check the mapping configuration to ensure that all necessary fields are being correctly mapped from the source to the target.
  
  
  Configuration Review: Verify the configuration of the service interface and the proxy settings in SAP. Ensure that all required parameters are correctly defined.
  
  
  Debugging: Use debugging tools to trace the execution and identify where the key is being lost or not set. This can help pinpoint the exact location of the issue.
  
  
  Error Logs: Check the application logs (transaction SLG1) for more detailed error messages that can provide additional context about the failure.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to the specific version of SAP you are using, as there may be known issues or patches available.
  
  
  Testing: After making changes, conduct thorough testing to ensure that the issue is resolved and that the system behaves as expected.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. You can search for UXS204 in the SAP Support Portal.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Documentation: Review the official SAP documentation for XML proxies and web services to ensure compliance with best practices.
  
  By following these steps, you should be able to identify and resolve the cause of the UXS204 error in your SAP environment.