How To Fix CNV_20800007 - Old customer &1 (to be converted) does not exist in the system

CNV_20800007 - Overview

• Message type: E = Error

• Message class: CNV_20800 - Message class for CNV_20800

• Message number: 007

• Message text: Old customer &1 (to be converted) does not exist in the system

What causes this issue?

The customer number &V1&, which is supposed to be converted, does not
exist in the system. It may represent an interval limit or similar.

How to fix this error?

Check if the value is correct and does not contain any typing errors.

Error message extract from SAP system. Copyright SAP SE.

CNV_20800007 - Details

• The SAP error message CNV_20800007 indicates that during a data conversion process, the system is unable to find an old customer record (identified by the customer number &1) that is supposed to be converted. This error typically arises in the context of data migration or conversion projects, particularly when using SAP's tools for migrating data from legacy systems to SAP S/4HANA or other SAP environments.
  
  Cause:
  
  
  Missing Customer Record: The most straightforward cause is that the customer record with the specified ID does not exist in the system. This could be due to:
  
  The customer was never created in the system.
  The customer was deleted or archived prior to the conversion process.
  There is a mismatch in the customer ID due to incorrect mapping or data extraction from the legacy system.
  
  
  
  Data Migration Issues: If the data migration process did not correctly extract or load the customer data, this could lead to missing records.
  
  
  
  Configuration Issues: There