How To Fix CNV_00001220 - Incorrect number of param. of routine &3 defined for field &2 of table &1

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 220

• Message text: Incorrect number of param. of routine &3 defined for field &2 of table &1

What causes this issue?

The conversion routine &V3& defined in for field &V2& of table &V1& has
a different number of parameters than in the generic definition of the
same routine in CNVDOMS and CNVDOPARS (assignment of the routines to
data elements / domains).

System Response

If the parameters to the conversion routine are not defined correctly
the conversion program will not be generated correctly.

How to fix this error?

Correct the parameter definitions for the routine &V3& (it should have
&V4& parameters).

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_00001220 - Incorrect number of param. of routine &3 defined for field &2 of table &1 ?

  The SAP error message CNV_00001220 indicates that there is an issue with the number of parameters defined for a routine in the context of a data conversion or migration process. This error typically arises during the execution of a conversion program, where a routine is expected to have a specific number of parameters, but the actual number provided does not match.
  Cause:
  
  Mismatch in Parameter Count: The routine defined for the field in the specified table has a different number of parameters than what is being passed during execution.
  Incorrect Routine Definition: The routine may have been incorrectly defined in the code or configuration, leading to discrepancies in expected versus actual parameters.
  Changes in Data Model: If there have been changes in the data model or the structure of the table, the routine may not have been updated accordingly.
  Configuration Errors: Errors in the configuration of the data migration or conversion settings can lead to this issue.
  
  Solution:
  
  Check Routine Definition: Review the routine defined for the field in the specified table. Ensure that the number of parameters in the routine matches what is being passed during execution.
  Update Routine: If the routine is incorrect, update it to ensure that it has the correct number of parameters as required by the logic of your conversion process.
  Review Data Model Changes: If there have been recent changes to the data model, ensure that all related routines and configurations are updated accordingly.
  Debugging: Use debugging tools to trace the execution of the conversion program and identify where the mismatch occurs. This can help pinpoint the exact location of the error.
  Consult Documentation: Refer to SAP documentation or notes related to the specific conversion program you are using to see if there are any known issues or updates that need to be applied.
  
  Related Information:
  
  Transaction Codes: You may want to check transaction codes related to data migration, such as LSMW (Legacy System Migration Workbench) or other specific tools used for data conversion.
  SAP Notes: Search for SAP Notes related to the error message or the specific conversion program you are using. SAP frequently releases notes that address known issues and provide solutions.
  Community Forums: Consider checking SAP Community forums or other user groups for similar issues encountered by other users, as they may provide insights or solutions that have worked for them.
  
  By following these steps, you should be able to identify and resolve the issue causing the CNV_00001220 error in your SAP environment.