How To Fix CNV_10020595 - Extended field name &1 defined incorrectly

CNV_10020595 - Overview

• Message type: E = Error

• Message class: CNV_10020 - Message class for package 10020

• Message number: 595

• Message text: Extended field name &1 defined incorrectly

What causes this issue?

In order to allow nested proxy, the extended field name can contain the
proxy symbol &V2& even multiple times. In such a case, the multiple
proxy have to be separated by a dash. &V1& contains several proxy that
are not separated by a dash.

How to fix this error?

Specify an extended field name that contains proxy separated by dashes.

Error message extract from SAP system. Copyright SAP SE.

CNV_10020595 - Details

• The SAP error message CNV_10020595, which states "Extended field name &1 defined incorrectly," 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 the definition of an extended field name in the context of the data being processed.
  
  Cause:
  
  Incorrect Field Definition: The extended field name specified in the migration or conversion process does not match the expected format or is not defined correctly in the system.
  Data Mapping Issues: There may be discrepancies in the mapping of fields between the source and target systems, leading to the use of an invalid or non-existent field name.
  Configuration Errors: The configuration settings for the migration or conversion process may not be set up correctly, leading to the use of incorrect field names.
  Version Compatibility: The error may arise if there are compatibility issues between the source