How To Fix CNV_00001248 - Illegal type '&3' of priority routine &2 for table &1

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_00001 - Message class for CWB settings maintenance programs

• Message number: 248

• Message text: Illegal type '&3' of priority routine &2 for table &1

What causes this issue?

Type '&V3&' of priority routine &V2& defined for table &V1& is not
allowed. Only form routines (type 'F') are accepted as priority
routines.

System Response

Status is set to 'Error'.

How to fix this error?

Correct the routine type (if it is a priority routine and only its type
was set incorrectly) or provide an appropriate priority routine.
In case of SAP standard tables contact SAP for support.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_00001248 - Illegal type '&3' of priority routine &2 for table &1 ?

  The SAP error message CNV_00001248 indicates that there is an issue with the priority routine defined for a specific table during a data conversion or migration process. The message breaks down as follows:
  
  &1: The name of the table that is causing the issue.
  &2: The name of the priority routine that is being referenced.
  &3: The illegal type of the priority routine.
  
  Cause
  The error typically arises when the priority routine defined for a table is not compatible with the expected type. This can happen due to:
  
  Incorrect Configuration: The priority routine may have been incorrectly configured or defined in the system.
  Data Type Mismatch: The routine may be expecting a different data type than what is being provided.
  Custom Code Issues: If there are custom routines or modifications, they may not adhere to the expected structure or data types.
  
  Solution
  To resolve this error, you can take the following steps:
  
  
  Check the Priority Routine: Review the definition of the priority routine for the specified table. Ensure that it is correctly implemented and matches the expected data types.
  
  
  Review Configuration: If the routine is part of a configuration, verify that all settings are correct and that there are no discrepancies in the configuration.
  
  
  Debugging: If you have access to the ABAP code, you can debug the routine to identify where the type mismatch is occurring. Look for any type declarations or data handling that may be causing the issue.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to the specific migration or conversion process you are working on. There may be known issues or additional configuration steps required.
  
  
  Contact SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP support for assistance. Provide them with the error message details and any relevant context.
  
  
  Related Information
  
  SAP Notes: Check for any SAP Notes related to the specific error message or the migration process you are using. SAP frequently updates their knowledge base with solutions to common issues.
  Migration Tools: If you are using a specific migration tool (like SAP S/4HANA Migration Cockpit), ensure that you are following the recommended procedures and guidelines for that tool.
  Community Forums: Consider searching or posting in SAP community forums or discussion groups. Other users may have encountered similar issues and can provide insights or solutions.
  
  By following these steps, you should be able to identify and resolve the cause of the CNV_00001248 error in your SAP system.