How To Fix CNV10400655 - Char. &1: Domain &2, Data Element &3: Conversion routine unknown.

CNV10400655 - Overview

• Message type: E = Error

• Message class: CNV10400 - Messages for package 10400 (characteristics)

• Message number: 655

• Message text: Char. &1: Domain &2, Data Element &3: Conversion routine unknown.

No form routine has been assigned to the combination domain/data
element in the CNVDOMS. Any objects evaluated in the classification
cannot be converted.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Use a domain/data element for which a form routine is given. Note that
the form routine must not expect any parameters.

Error message extract from SAP system. Copyright SAP SE.

CNV10400655 - Details

• The SAP error message CNV10400655 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 specific character field in the data being processed, specifically that the conversion routine for a data element is unknown or not defined.
  
  Cause:
  
  Missing Conversion Routine: The data element associated with the character field does not have a defined conversion routine. This can happen if the data element is custom or if the necessary conversion routine has not been implemented in the system.
  Incorrect Data Mapping: The mapping of the source data to the target data structure may be incorrect, leading to the system not being able to find the appropriate conversion routine.
  Data Type Mismatch: The data type of the source field may not match the expected data type of the target field, causing the conversion routine