How To Fix CNV_20100681 - Old account &2 &1 exists more than once in the 'Further accounts' mapping

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 681

• Message text: Old account &2 &1 exists more than once in the 'Further accounts' mapping

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_20100681 - Old account &2 &1 exists more than once in the 'Further accounts' mapping ?

  The SAP error message CNV_20100681 indicates that there is a duplicate entry for an old account in the 'Further accounts' mapping during a data migration or conversion process. This typically occurs in the context of the SAP S/4HANA migration or when using the SAP Conversion Tools.
  Cause:
  The error arises when the system detects that the same old account (identified by the account number and possibly the company code) is mapped more than once in the 'Further accounts' mapping table. This can happen due to:
  
  Duplicate Entries: The same old account has been entered multiple times in the mapping configuration.
  Incorrect Data Preparation: During the data preparation phase, the mapping file may have been incorrectly populated, leading to duplicates.
  Data Migration Tool Issues: If using a migration tool, there may be a bug or misconfiguration causing it to generate duplicate mappings.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check the Mapping Table: Access the mapping table where the 'Further accounts' are defined. Look for the old account number mentioned in the error message and check for duplicate entries.
  
  
  Remove Duplicates: If you find duplicate entries for the same old account, remove the duplicates so that each old account is mapped only once.
  
  
  Validate Mapping: After correcting the duplicates, validate the mapping to ensure that all necessary accounts are correctly mapped without any duplicates.
  
  
  Re-run the Migration: Once the duplicates are resolved, re-run the migration or conversion process to see if the error persists.
  
  
  Consult Documentation: If you are unsure about the mapping process, refer to the SAP documentation or guides related to the specific migration or conversion scenario you are working on.
  
  
  Seek Support: If the issue continues or if you need further assistance, consider reaching out to SAP support or consulting with an SAP expert who can provide guidance based on your specific situation.
  
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like SE16 or SE11 to view and edit the mapping tables.
  Migration Cockpit: If you are using the SAP S/4HANA Migration Cockpit, ensure that you are familiar with its functionalities and how to manage mappings effectively.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  
  By following these steps, you should be able to resolve the CNV_20100681 error and proceed with your data migration or conversion successfully.