How To Fix CNV_DMC_SIN372 - Unexpected Accounting Document Number &1 for external numbering

CNV_DMC_SIN372 - Overview

• Message type: E = Error

• Message class: CNV_DMC_SIN - Messages for s-innovations migration

• Message number: 372

• Message text: Unexpected Accounting Document Number &1 for external numbering

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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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CNV_DMC_SIN372 - Details

• The SAP error message CNV_DMC_SIN372 indicates that there is an issue with the accounting document number during a data migration process, specifically when using external numbering for accounting documents. This error typically arises in the context of the SAP Data Migration Cockpit (DMC) or during the migration of financial data from legacy systems to SAP S/4HANA.
  
  Cause:
  The error message suggests that the system encountered an unexpected accounting document number. This can happen due to several reasons:
  
  Number Range Issues: The external number range defined for accounting documents may not be correctly set up or may not match the expected format.
  Duplicate Numbers: There may be duplicate document numbers in the data being migrated, which conflicts with the unique constraints of the accounting document number in SAP.
  Incorrect Mapping: The mapping of the external document numbers to the internal SAP numbering may be incorrect or not properly configured.
  Data Format Issues: The format of the external