How To Fix CNV_20800021 - Merge to customer number &2

CNV_20800021 - Overview

• Message type: E = Error

• Message class: CNV_20800 - Message class for CNV_20800

• Message number: 021

• Message text: Merge to customer number &2

What causes this issue?

The system found that you want to merge &V1& (and possibly others) into
the existing customer number &V2&.
This corresponds to the following merge:
&V1& -> &V2&
..........-> &V2&
&V2& -> &V2&

Error message extract from SAP system. Copyright SAP SE.

CNV_20800021 - Details

• The SAP error message CNV_20800021, which states "Merge to customer number &2," typically occurs during data migration or data conversion processes, particularly when using the SAP Customer Migration tool. This error indicates that there is an issue with merging customer records, often due to inconsistencies or conflicts in the data being processed.
  
  Cause:
  
  Duplicate Customer Records: The error usually arises when there are duplicate customer records in the source data that need to be merged into a single customer number.
  Data Inconsistencies: There may be inconsistencies in the data fields of the customer records that prevent a successful merge.
  Missing Required Fields: If required fields for the customer records are missing or incorrectly populated, the merge process may fail.
  
  Configuration Issues: There could be configuration settings in the migration tool that are not set up correctly.
  
  
  Solution:
  
  Identify Duplicate Records: Use transaction codes like SE16 or SE11 to check the customer master data tables (e.g., KNA1) for