How To Fix WRPC_XI_PROXY016 - Use either CustomerPartyInternalID or StoreInternalID, not both

SAP Error Message - Details

• Message type: E = Error

• Message class: WRPC_XI_PROXY -

• Message number: 016

• Message text: Use either CustomerPartyInternalID or StoreInternalID, not both

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WRPC_XI_PROXY016 - Use either CustomerPartyInternalID or StoreInternalID, not both ?

  The SAP error message:
  WRPC_XI_PROXY016: Use either CustomerPartyInternalID or StoreInternalID, not both
  
  Cause:
  This error occurs when an IDoc or proxy message related to a business partner or customer contains both the fields CustomerPartyInternalID and StoreInternalID filled simultaneously, whereas the interface or mapping logic expects only one of these identifiers to be used at a time.
  In other words, the message structure or the integration scenario requires that either the CustomerPartyInternalID or the StoreInternalID be provided, but not both together. Providing both leads to ambiguity in identifying the party/store and causes the error.
  This is common in SAP PI/PO or SAP CPI scenarios where the message validation or mapping enforces this rule, or in SAP ERP when processing inbound proxy or IDoc messages.
  
  Solution:
  
  
  Check the source system or middleware that generates the message:
  
  Ensure that only one of the two fields (CustomerPartyInternalID or StoreInternalID) is populated.
  If both are being sent, adjust the logic or mapping to send only the relevant identifier.
  
  
  
  Review the message mapping or interface design:
  
  Modify the mapping to include a condition or filter that excludes one of the IDs if both are present.
  Implement validation logic to throw a meaningful error or correct the data before sending.
  
  
  
  Data correction:
  
  If the data source is incorrect (e.g., master data or transactional data), correct the data so that only one ID is maintained per business partner/store.
  
  
  
  Consult SAP documentation or interface specifications:
  
  Verify which ID is expected in your specific scenario.
  Follow the interface guidelines to ensure compliance.
  
  
  
  
  Related Information:
  
  This error is typically seen in scenarios involving Customer Master Data replication, Store/Branch identification, or Business Partner synchronization between SAP systems or between SAP and external systems.
  The fields CustomerPartyInternalID and StoreInternalID are identifiers used to uniquely identify a customer or a store entity.
  The error message is part of the validation logic in SAP's proxy or IDoc processing framework.
  Similar errors may occur if the interface expects mutually exclusive fields but receives both.
  
  
  Summary:
  
  Cause: Both CustomerPartyInternalID and StoreInternalID are populated simultaneously, which is not allowed.
  Solution: Ensure only one of these IDs is sent in the message by correcting the source data or adjusting the mapping/interface logic.
  Check: Interface documentation, source system data, and mapping conditions.
  
  
  If you provide the exact interface or scenario (e.g., which SAP module or integration technology), I can help with more specific guidance.