How To Fix CNV_20100260 - Impl. merge of sec. CostEl &1 with G/L acct &2 due to merge in exist. CoA

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 260

• Message text: Impl. merge of sec. CostEl &1 with G/L acct &2 due to merge in exist. CoA

What causes this issue?

The system found that the secondary cost element &V1& is converted
into &V3& (according to the mapping). However there is already a
G/L account &V3&, which does not get converted into another value.

System Response

In effect, this means that a secondary cost element and a G/L account
are going to be merged (implicit merge). 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

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.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_20100260 - Impl. merge of sec. CostEl &1 with G/L acct &2 due to merge in exist. CoA ?

  The SAP error message CNV_20100260 typically occurs during the data migration process, particularly when using the SAP S/4HANA Migration Cockpit or during the conversion of a system to S/4HANA. This error indicates that there is an issue with merging secondary cost elements with General Ledger (G/L) accounts due to a merge in the existing Chart of Accounts (CoA).
  Cause:
  
  Chart of Accounts (CoA) Configuration: The error arises when there are conflicts in the mapping of secondary cost elements to G/L accounts during the migration process. This can happen if the same cost element is being mapped to multiple G/L accounts or if there are inconsistencies in the CoA setup.
  Data Migration Issues: If the data being migrated contains duplicates or conflicts in the definitions of cost elements and G/L accounts, this error can occur.
  Inconsistent Master Data: The master data for cost elements and G/L accounts may not be aligned, leading to issues during the merging process.
  
  Solution:
  
  Review CoA Configuration: Check the configuration of your Chart of Accounts to ensure that there are no conflicts or duplicates in the definitions of cost elements and G/L accounts.
  Data Mapping: Ensure that the mapping of secondary cost elements to G/L accounts is correct and does not lead to conflicts. You may need to adjust the mapping in the migration tool.
  Clean Up Master Data: Review and clean up the master data for cost elements and G/L accounts to ensure consistency. Remove any duplicates or unnecessary entries that could cause conflicts.
  Use Migration Tools: Utilize SAP's migration tools and guidelines to ensure that the migration process is followed correctly. This includes using the correct templates and following best practices for data migration.
  Consult Documentation: Refer to SAP documentation or notes related to the specific error message for additional guidance and troubleshooting steps.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or solutions for this specific error message.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Testing: Before performing the actual migration, conduct thorough testing in a development or sandbox environment to identify and resolve any issues beforehand.
  
  If the problem persists after following these steps, it may be beneficial to consult with an SAP expert or your SAP support team for further assistance.