How To Fix CNV10400103 - Initial field name is not allowed

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 103

• Message text: Initial field name is not allowed

What causes this issue?

Initial field name is not allowed

System Response

Field FIELDNAME in table CNVFIELDS must not be empty

How to fix this error?

Check the package settings in table CNVFIELDS

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV10400103 - Initial field name is not allowed ?

  The SAP error message CNV10400103 with the description "Initial field name is not allowed" 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 field name being used in the migration process is either empty or not properly defined.
  Cause:
  
  Empty Field Name: The error usually arises when a field name is not specified or is left blank in the mapping or configuration settings.
  Invalid Configuration: The field name may not conform to the expected naming conventions or standards set by SAP.
  Data Mapping Issues: There may be issues in the data mapping configuration where the source field is not correctly linked to the target field.
  
  Solution:
  
  Check Field Names: Review the mapping configuration to ensure that all field names are correctly specified and not left empty.
  Correct Mapping: Ensure that the source and target fields are correctly mapped. If a field is not needed, it should be removed from the mapping.
  Naming Conventions: Verify that the field names adhere to SAP's naming conventions. Avoid using special characters or spaces that may not be allowed.
  Review Migration Templates: If you are using a migration template, ensure that it is correctly set up and that all required fields are populated.
  Consult Documentation: Refer to the SAP documentation for the specific migration tool you are using to ensure compliance with all requirements.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on data migration issues.
  Migration Cockpit: Familiarize yourself with the SAP S/4HANA Migration Cockpit and its configuration settings, as this tool is commonly used for data migration.
  Testing: Conduct thorough testing of the migration process in a development or sandbox environment before executing it in production to catch any errors early.
  
  If the issue persists after following these steps, consider reaching out to SAP support or consulting with an SAP expert for further assistance.