Message type: E = Error
Message class:  FIN_EDI - Messages for the EDI interface in FIN 
Message number: 055
Message text: Wrong items numbering. Expected: &1, actual value: &2
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The SAP error message FIN_EDI055, which states "Wrong items numbering. Expected: &1, actual value: &2," typically occurs in the context of Electronic Data Interchange (EDI) processes, particularly when dealing with financial documents such as invoices or payment advice.
Cause: This error indicates a mismatch between the expected item number and the actual item number present in the EDI document. The expected value (&1) is what the system anticipates based on the previous entries or the configuration, while the actual value (&2) is what is being received in the EDI message. This discrepancy can arise due to several reasons: Incorrect EDI Mapping: The mapping of fields in the EDI document may not align with the expected structure in SAP. Data Entry Errors: Manual errors during data entry or processing can lead to incorrect item numbering.
Configuration Issues: The configuration settings in SAP for EDI processing may not be set up correctly, leading to mismatches. Document Sequence Issues:
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