Message type: E = Error
Message class: WZRE_PRX - SOA messages from proxy implementations
Message number: 502
Message text: Invoice request &1 already exists
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WZRE_PRX502
- Invoice request &1 already exists ?The SAP error message: WZRE_PRX502 Invoice request &1 already exists typically occurs in the context of invoice processing, particularly when dealing with invoice requests in SAP's logistics or financial modules (such as MM - Materials Management or FI - Financial Accounting). Cause This error means that an invoice request with the identifier &1 (where &1 is replaced by the actual invoice request number) already exists in the system. The system is trying to create or post an invoice request that duplicates an existing one, which is not allowed. Common causes include: Attempting to create a duplicate invoice request for the same invoice or delivery. A previous invoice request was already created and not yet cleared or processed. Data inconsistencies or duplicate entries due to manual intervention or system errors. Integration issues where the same invoice data is sent multiple times from an external system. Solution To resolve this error, consider the following steps: Check Existing Invoice Requests: Use transaction codes like MRBR, MIRO,
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