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

CNV_20310_CHECK022 - Overview

• 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.

CNV_20310_CHECK022 - Details

• 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