Message type: E = Error
Message class:  CNV_20000 - Messages for fiscal year change 
Message number: 283
Message text: Document &1, Year &2 need to be renumbered
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The SAP error message CNV_20000283 indicates that there is an issue with document numbering in the system, specifically that a document (identified by &1) for a particular year (&2) needs to be renumbered. This error typically arises during data migration or conversion processes, especially when using SAP's data migration tools.
Cause: Document Numbering Gaps: The document numbering sequence may have gaps or inconsistencies, which can occur during data migration from legacy systems or due to manual entry errors. Duplicate Document Numbers: There may be duplicate document numbers in the system, which violates the unique constraints of document numbering. Incorrect Configuration: The configuration settings for document numbering in the SAP system may not align with the data being imported or migrated.
Solution: Renumbering Documents: You will need to renumber the affected documents. This can typically be done using SAP transaction codes or tools designed for document renumbering. Use transaction SARA to access archiving and renumbering options. Alternatively, you may
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