How To Fix CNV_10020644 - &1 &2: Proxy &3 in field to be converted is undefined

CNV_10020644 - Overview

• Message type: E = Error

• Message class: CNV_10020 - Message class for package 10020

• Message number: 644

• Message text: &1 &2: Proxy &3 in field to be converted is undefined

What causes this issue?

The field to be converted contains a proxy &V3& that is undefined.

How to fix this error?

Define the proxy &V3& and its value using transaction CNV_10020_PROXYF.

Error message extract from SAP system. Copyright SAP SE.

CNV_10020644 - Details

• The SAP error message CNV_10020644 typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that a proxy field in the data being processed is undefined, which means that the system is unable to find a corresponding value for the specified field in the source data.
  
  Cause:
  
  Missing Data: The most common cause is that the source data does not contain a value for the specified proxy field. This could be due to incomplete data extraction or transformation processes.
  Mapping Issues: There may be a mapping issue where the source field is not correctly mapped to the target field in the migration configuration.
  Configuration Errors: Incorrect configuration settings in the migration cockpit or data migration tool can lead to this error.
  Data Type Mismatch: The data type of the source field may not match the expected data type in the target