How To Fix CNV_20100253 - Implicit merge of G/L acct &1 with secondary CostEl &2 due to CoA change

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 253

• Message text: Implicit merge of G/L acct &1 with secondary CostEl &2 due to CoA change

What causes this issue?

The system found that the G/L account &V1& is converted into &V3& in
connection with the chart of accounts change. However there is already a
secondary cost element called &V2&, which does not get converted into
another value.

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

System Response

In effect, this means that a G/L account (&V1&) and a secondary cost
element (&V2&) are going to be merged. This is not allowed.
The conversion cannot take place.

How to fix this error?

The mapping table must be adjusted accordingly.

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_20100253 - Implicit merge of G/L acct &1 with secondary CostEl &2 due to CoA change ?

  The SAP error message CNV_20100253 indicates an issue related to the implicit merging of General Ledger (G/L) accounts during a change in the Chart of Accounts (CoA). This typically occurs during data migration or system upgrades when the structure of the G/L accounts is altered, and the system attempts to reconcile or merge accounts that are no longer compatible due to the changes.
  Cause:
  
  Chart of Accounts Change: The error arises when there is a change in the Chart of Accounts, which can lead to the implicit merging of G/L accounts with secondary cost elements.
  Data Migration: During data migration, if the mapping of G/L accounts to the new CoA is not correctly defined, the system may attempt to merge accounts that should remain distinct.
  Configuration Issues: Incorrect configuration in the financial settings or in the mapping of accounts can lead to this error.
  
  Solution:
  
  Review CoA Changes: Check the changes made to the Chart of Accounts. Ensure that the mapping of G/L accounts to the new CoA is correct and that no unintended merges are occurring.
  Adjust Account Mapping: If you are migrating data, ensure that the mapping of old G/L accounts to new G/L accounts is properly defined. You may need to adjust the mapping to prevent implicit merges.
  Consult Documentation: Refer to SAP documentation or notes related to the specific version you are using for any known issues or additional guidance on handling CoA changes.
  Use Transaction Codes: Utilize transaction codes like OX15 (for maintaining the Chart of Accounts) and OX19 (for mapping accounts) to review and adjust your settings.
  Testing: After making adjustments, conduct thorough testing to ensure that the changes do not lead to further issues and that the accounts are functioning as expected.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or patches related to this error.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have implemented.
  Consult with SAP Support: If the issue persists, consider reaching out to SAP Support for assistance, especially if this is part of a larger migration or upgrade project.
  
  By addressing the underlying causes and ensuring proper configuration and mapping, you can resolve the CNV_20100253 error effectively.