How To Fix CNV_20100262 - Implicit merge of secondary cost element &1 with G/L account &2

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 262

• Message text: Implicit merge of secondary cost element &1 with G/L account &2

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
&V2&, which is also converted into &V3&.

System Response

In effect, this means that a secondary cost element (&V1&) and a G/L
account (&V2&) 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_20100262 - Implicit merge of secondary cost element &1 with G/L account &2 ?

  The SAP error message CNV_20100262, which indicates an "Implicit merge of secondary cost element &1 with G/L account &2," typically arises during the migration or conversion process when there is a conflict between secondary cost elements and G/L accounts. This error is often encountered in the context of data migration projects, particularly when using the SAP S/4HANA Migration Cockpit or similar tools.
  Cause:
  
  Data Conflict: The error occurs when the system detects that a secondary cost element (which is used for internal cost allocation) is being implicitly merged with a G/L account (which is used for external financial reporting). This can happen if the same account is being used for both purposes, leading to confusion in the financial reporting structure.
  Configuration Issues: There may be configuration issues in the chart of accounts or in the cost element structure that lead to this conflict.
  Data Migration Issues: During data migration, if the mapping of cost elements to G/L accounts is not done correctly, it can lead to this error.
  
  Solution:
  
  Review Cost Element and G/L Account Mapping: Check the mapping of secondary cost elements to G/L accounts in your migration settings. Ensure that they are correctly defined and that there are no overlaps.
  Adjust Configuration: If necessary, adjust the configuration of your cost elements and G/L accounts to ensure that they are distinct and do not conflict with each other.
  Data Cleansing: Before migration, perform data cleansing to ensure that there are no duplicate or conflicting entries in your cost element and G/L account tables.
  Consult Documentation: Refer to SAP documentation or notes related to the specific migration process you are using. There may be specific guidelines or best practices for handling cost elements and G/L accounts.
  Use Transaction Codes: Utilize transaction codes like OKEQ (for cost element accounting) and OBY6 (for G/L account settings) to review and adjust your settings.
  Seek Support: If the issue persists, consider reaching out to SAP support or consulting with an SAP expert who can provide guidance based on your specific system configuration and migration scenario.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context on handling cost elements and G/L accounts during migration.
  Migration Cockpit: Familiarize yourself with the SAP S/4HANA Migration Cockpit and its functionalities, as it provides tools and templates for data migration.
  Training and Documentation: Consider training resources or documentation on SAP Financial Accounting (FI) and Controlling (CO) modules to better understand the relationship between cost elements and G/L accounts.
  
  By addressing the underlying causes and following the suggested solutions, you should be able to resolve the CNV_20100262 error and proceed with your migration or conversion process.