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

SAP Error Message - Details

• 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.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV10400655 - Char. &1: Domain &2, Data Element &3: Conversion routine unknown. ?

  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 to be unrecognized.
  
  Solution:
  
  Define the Conversion Routine: If you have access to the ABAP development environment, you can create or define the necessary conversion routine for the data element in question. This involves implementing the logic that will convert the data from the source format to the target format.
  Check Data Mapping: Review the mapping configuration in your migration project. Ensure that the source fields are correctly mapped to the target fields and that the data types are compatible.
  Use Standard Data Elements: If possible, use standard SAP data elements that already have defined conversion routines instead of custom ones. This can help avoid issues related to missing routines.
  Consult Documentation: Check SAP documentation or notes related to the specific data element and conversion routines. There may be existing solutions or recommendations for handling this error.
  Debugging: If you have the necessary permissions, you can debug the migration process to identify where the error is occurring and gather more information about the specific data element and its expected conversion routine.
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes that may address this specific error or provide guidance on data migration issues.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Data Migration Tools: Familiarize yourself with the tools and methodologies used for data migration in SAP, such as the SAP S/4HANA Migration Cockpit, LSMW (Legacy System Migration Workbench), or other ETL (Extract, Transform, Load) tools.
  
  By addressing the root cause of the error and ensuring that the necessary conversion routines are defined and correctly mapped, you should be able to resolve the issue and proceed with your data migration successfully.