How To Fix CNV_10020645 - &1 &2: Proxy &3 in proxy &4 in field to be converted is undefined

CNV_10020645 - Overview

• Message type: E = Error

• Message class: CNV_10020 - Message class for package 10020

• Message number: 645

• Message text: &1 &2: Proxy &3 in proxy &4 in field to be converted is undefined

What causes this issue?

The field to be converted contains a proxy &V4& that refers to another
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_10020645 - Details

• The SAP error message CNV_10020645 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 there is an issue with a proxy object in the conversion process, specifically that a field that is expected to be populated is undefined.
  
  Cause:
  
  Missing Data: The field that is supposed to be converted does not have a value in the source data. This could be due to incomplete data extraction or transformation.
  Mapping Issues: There may be a problem with the mapping of fields between the source and target systems. If the mapping is not correctly defined, the system may not know how to handle certain fields.
  Configuration Errors: Incorrect configuration in the migration cockpit or the 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