How To Fix CNV_20100251 - 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: 251

• 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& (according to the mapping). However there is already a
secondary cost element called &V2&, which is also going to be
converted into &V3& in connection with the chart of accounts
change.

System Response

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

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?

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_20100251 - Implicit merge of G/L acct &1 with secondary CostEl &2 due to CoA change ?

  The SAP error message CNV_20100251 indicates that there is an implicit merge of a General Ledger (G/L) account with a secondary cost element due to a change in the Chart of Accounts (CoA). This typically occurs during data migration or when changes are made to the CoA structure in the SAP system.
  Cause:
  
  Chart of Accounts Change: The error arises when there is a change in the Chart of Accounts that affects the mapping of G/L accounts to cost elements. This can happen during a system upgrade, data migration, or when restructuring the CoA.
  Data Inconsistency: The G/L account and the secondary cost element may have been defined in a way that they are no longer compatible due to the changes in the CoA.
  Configuration Issues: There may be configuration issues in the system that lead to the implicit merging of accounts.
  
  Solution:
  
  Review CoA Changes: Check the changes made to the Chart of Accounts. Ensure that the G/L accounts and cost elements are correctly mapped and that there are no inconsistencies.
  Adjust Account Mapping: If necessary, adjust the mapping of G/L accounts to cost elements to ensure they align with the new CoA structure.
  Data Migration Tools: If this error occurs during data migration, review the migration tools and processes being used. Ensure that the mapping and transformation rules are correctly defined.
  Consult Documentation: Refer to SAP documentation or notes related to the specific version you are using for any additional guidance on handling CoA changes.
  Testing: After making adjustments, conduct thorough testing to ensure that the changes do not lead to further issues.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or solutions for this specific error message.
  Transaction Codes: Use transaction codes like OBY6 (for Chart of Accounts) and KA01 (for creating cost elements) to review and adjust configurations.
  Support: If the issue persists, consider reaching out to SAP support or consulting with an SAP expert who can provide tailored assistance based on your specific system configuration and requirements.
  
  By addressing the underlying causes and ensuring proper configuration, you can resolve the CNV_20100251 error and prevent it from occurring in the future.