How To Fix CNV_20100321 - N:1 mapping of G/L accounts and cost elements

CNV_20100321 - Overview

• Message type: E = Error

• Message class: CNV_20100 - Messageclass for chart of account conversion

• Message number: 321

• Message text: N:1 mapping of G/L accounts and cost elements

What causes this issue?

N:1 mapping of G/L accounts and/or cost elements
Following G/L account or cost element occurs more than once as a target
value:
Chart of accounts = &V1&, G/L account or cost element = &V2&.

System Response

Warning

How to fix this error?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

CNV_20100321 - Details

• The SAP error message CNV_20100321 typically relates to issues encountered during the mapping of General Ledger (G/L) accounts and cost elements in the context of data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools.
  
  Cause:
  The error message indicates that there is a problem with the mapping of G/L accounts and cost elements, specifically that there is a N:1 mapping issue. This means that multiple source accounts or cost elements are trying to map to a single target account or cost element, which is not allowed in the mapping process. This can occur due to:
  
  Duplicate Entries: Multiple source accounts or cost elements are mapped to the same target account.
  Incorrect Mapping Configuration: The mapping configuration may not be set up correctly, leading to conflicts.
  Data Quality Issues: The source data may contain inconsistencies or duplicates that need to be resolved before mapping.
  
  
  Solution:
  To resolve the CNV_20100321 error, you