How To Fix CNV_20310_CHECK022 - Double mapping entry provided for source COAr &1 cost center &2

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20310_CHECK -

• Message number: 022

• Message text: Double mapping entry provided for source COAr &1 cost center &2

What causes this issue?

A source value is mapped to multiple target values. To run the
transformation solution, all source mapping values must have exactly one
target value.
You cannot run the transformation solution because certain prerequisites
have not been met. We recommend that you contact SAP for support by
creating a ticket using component CA-LT-CNV.

System Response

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?

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_20310_CHECK022 - Double mapping entry provided for source COAr &1 cost center &2 ?

  The SAP error message CNV_20310_CHECK022 indicates that there is a double mapping entry for a source cost object (in this case, a cost center) during a data migration or conversion process. This typically occurs in the context of SAP's data migration tools, such as the SAP S/4HANA Migration Cockpit or other conversion tools.
  Cause:
  The error arises when the system detects that the same source cost center (COAr) is being mapped to multiple target cost centers. This can happen due to:
  
  Duplicate Entries: There are duplicate entries in the mapping table for the same source cost center.
  Incorrect Mapping Logic: The mapping logic may not be correctly defined, leading to multiple target mappings for a single source.
  Data Quality Issues: The source data may have inconsistencies or duplicates that were not addressed prior to the migration.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Mapping Table: Review the mapping table where the source cost centers are defined. Look for duplicate entries for the same source cost center (COAr) and ensure that each source cost center maps to only one target cost center.
  
  
  Remove Duplicates: If you find duplicates, remove or consolidate them so that each source cost center has a unique mapping to a target cost center.
  
  
  Validate Source Data: Ensure that the source data does not contain duplicates or inconsistencies. Clean up the data if necessary.
  
  
  Review Mapping Logic: If you are using a custom mapping logic, review it to ensure that it correctly handles the mapping without creating duplicates.
  
  
  Test the Changes: After making the necessary adjustments, re-run the migration or conversion process to see if the error persists.
  
  
  Consult Documentation: If you are using a specific migration tool, refer to the official SAP documentation for guidance on mapping and data conversion best practices.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional guidance on data migration issues.
  Migration Cockpit: Familiarize yourself with the SAP S/4HANA Migration Cockpit and its functionalities, as it provides tools for mapping and data validation.
  Data Migration Best Practices: Review best practices for data migration in SAP to avoid common pitfalls and ensure a smooth transition.
  
  By following these steps, you should be able to resolve the CNV_20310_CHECK022 error and successfully complete your data migration or conversion process.