How To Fix CNV_20100359 - Chart of accounts mapping &1=>&2 and &3=>&4 leads to temporary duplicates

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 359

• Message text: Chart of accounts mapping &1=>&2 and &3=>&4 leads to temporary duplicates

What causes this issue?

The mapping values result in <DS:TX.CNV_MBT_TEMP_DUPLICATES>temporary
duplicates</>.

System Response

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

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_20100359 - Chart of accounts mapping &1=>&2 and &3=>&4 leads to temporary duplicates ?

  The SAP error message CNV_20100359 indicates that there is a mapping issue in the chart of accounts during a data migration or conversion process. This error typically arises when the mapping of accounts from the source system to the target system results in temporary duplicates. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause:
  
  Mapping Conflicts: The error occurs when two or more accounts from the source chart of accounts are mapped to the same account in the target chart of accounts. This can happen if the mapping logic is not correctly defined or if there are overlapping account numbers or descriptions.
  Data Migration Issues: During data migration, if the source and target systems have different structures or if the mapping is not properly aligned, it can lead to duplicates.
  Configuration Errors: Incorrect configuration in the mapping settings or in the data migration tool can also lead to this error.
  
  Solution:
  
  Review Mapping Configuration: Check the mapping configuration for the chart of accounts. Ensure that each account in the source system is mapped to a unique account in the target system. Adjust the mapping to eliminate any overlaps.
  Adjust Account Assignments: If necessary, modify the account assignments in the source or target system to ensure that there are no duplicates. This may involve creating new accounts or reassigning existing ones.
  Use Unique Identifiers: Ensure that the accounts being mapped have unique identifiers that can help prevent duplicates during the mapping process.
  Test Migration: Before performing a full migration, conduct a test migration with a subset of data to identify any potential issues with the mapping and resolve them before the full migration.
  Consult Documentation: Refer to SAP documentation or guides related to the specific migration tool you are using (e.g., SAP S/4HANA Migration Cockpit) for best practices and troubleshooting steps.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on chart of accounts mapping.
  Migration Tools: Familiarize yourself with the migration tools available in SAP, such as the SAP S/4HANA Migration Cockpit, which may have specific features for handling chart of accounts mapping.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared by other users.
  
  By addressing the mapping conflicts and ensuring that each account is uniquely assigned, you should be able to resolve the CNV_20100359 error and proceed with your data migration successfully.