How To Fix CNV_2010C066 - This 'Mapped ID' already exists in the system. Please assign another one

CNV_2010C066 - Overview

• Message type: E = Error

• Message class: CNV_2010C - Message class for CoA on Cloud

• Message number: 066

• Message text: This 'Mapped ID' already exists in the system. Please assign another one

Self-Explanatory Message

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CNV_2010C066 - Details

• The SAP error message CNV_2010C066 indicates that there is an attempt to create or map an ID that already exists in the system. This error typically arises during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools.
  
  Cause:
  
  Duplicate Mapping: The error occurs when the system detects that the ID you are trying to map or create is already associated with another entity in the system.
  Data Integrity Issues: There may be issues with the data being imported, such as duplicates in the source data that are not being handled correctly.
  Configuration Errors: Incorrect configuration settings in the migration tool or mapping settings can lead to this error.
  
  
  Solution:
  
  
  Check Existing IDs: Verify the existing IDs in the target system to ensure that the ID you are trying to use is not already in use. You can do this by querying the relevant tables or using transaction