How To Fix CNV20305605 - Problem in routine CNV_20305_ZUONR: Unknown parameter type

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV20305 - Messages for conversion packages in CO

• Message number: 605

• Message text: Problem in routine CNV_20305_ZUONR: Unknown parameter type

What causes this issue?

Routine CNV_20305_ZUONR is designed for converting intransparent fields
in field ZUONR.
For the dynamic call for field &V2& from table &V2&, a parameter type
&V3& has been specified. However the routine cannot process this
parameter type.
Additional information: The value of the field that is meant to be
converted is &V4&.

System Response

The routine cannot make the dynamic call; consequently, it cannot
convert the field either.
However the conversion is continued for the other fields and records.

How to fix this error?

Check if you really need to convert the given field; if yes, the
routine must be changed accordingly.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV20305605 - Problem in routine CNV_20305_ZUONR: Unknown parameter type ?

  The SAP error message CNV20305605, which indicates a problem in the routine CNV_20305_ZUONR due to an "Unknown parameter type," typically arises during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools.
  Cause:
  
  
  Parameter Type Mismatch: The error suggests that the routine is encountering a parameter type that it does not recognize or that is not defined correctly. This could be due to:
  
  Incorrect data types being passed to the routine.
  Changes in the data structure or schema that the routine is not accounting for.
  Missing or misconfigured settings in the migration or conversion process.
  
  
  
  Custom Code Issues: If there are custom enhancements or modifications in the migration routines, they may not be compatible with the expected parameter types.
  
  
  Version Compatibility: The error may also arise if there are discrepancies between the versions of the source and target systems, or if the migration tool is not up to date.
  
  
  Solution:
  
  
  Check Parameter Definitions: Review the routine CNV_20305_ZUONR to ensure that all parameter types are correctly defined and that the data being passed matches these definitions.
  
  
  Debugging: If you have access to the ABAP development environment, you can debug the routine to identify the exact point of failure and the parameters being passed at that time.
  
  
  Review Migration Settings: Ensure that all settings in the migration cockpit or tool are correctly configured. This includes checking mapping rules and data types.
  
  
  Update or Patch: Ensure that your SAP system is up to date with the latest patches and updates, as SAP frequently releases notes that address known issues.
  
  
  Consult SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error. SAP Notes often provide solutions or workarounds for known issues.
  
  
  Engage SAP Support: If the issue persists, consider reaching out to SAP Support for assistance. Provide them with detailed information about the error, including the context in which it occurs and any relevant logs.
  
  
  Related Information:
  
  SAP Migration Cockpit: Familiarize yourself with the SAP Migration Cockpit documentation, as it provides guidelines on data migration processes and common issues.
  ABAP Development: If you have access to ABAP development tools, understanding how to read and modify ABAP code can be beneficial for troubleshooting.
  Data Dictionary: Review the data dictionary (SE11) to ensure that the data types and structures are correctly defined and consistent across the systems involved in the migration.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution.