How To Fix CNV_10020750 - No rule was assigned to evaluate &1

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_10020 - Message class for package 10020

• Message number: 750

• Message text: No rule was assigned to evaluate &1

What causes this issue?

Processing required the evaluation of the non-transparent field
component &V1&. For &V1& no rule was assigned (release &V2&).

System Response

Evaluation is not possible.

How to fix this error?

Add a rule assignment for &V1&.
&HINTS&

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

To add the assignment use the activity <ZK>Edit Settings for
Non-transparent Fields</>.
If the org. package runs without an interface package, you can add the
assignment using transaction CNV_10020_RCOMP.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_10020750 - No rule was assigned to evaluate &1 ?

  The SAP error message CNV_10020750: No rule was assigned to evaluate &1 typically occurs in the context of data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that the system could not find a mapping or transformation rule for a specific data element (represented by &1).
  Cause:
  
  Missing Mapping Rules: The most common cause is that there are no defined rules for the specific data element that the system is trying to process.
  Configuration Issues: The migration or conversion project may not have been properly configured, leading to missing or incomplete rules.
  Data Element Not Supported: The data element being evaluated may not be supported in the current migration scenario.
  Incorrect Data Source: The source data may not match the expected format or structure, leading to the inability to find a corresponding rule.
  
  Solution:
  
  
  Check Mapping Rules: 
  
  Go to the relevant transaction or tool where the mapping rules are defined (e.g., the Migration Cockpit).
  Verify that there are rules defined for the data element in question. If not, you may need to create or modify the mapping rules.
  
  
  
  Review Configuration:
  
  Ensure that the migration project is correctly configured and that all necessary settings are in place.
  Check if the correct source and target systems are defined.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation for the specific migration scenario you are working on. This may provide insights into required mappings and configurations.
  
  
  
  Data Validation:
  
  Validate the source data to ensure it meets the expected format and structure. If the data is incorrect, it may lead to issues in finding the appropriate rules.
  
  
  
  Use SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error. There may be patches or updates that resolve known issues.
  
  
  
  Seek Help from SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP Support for assistance. Provide them with detailed information about the error and the context in which it occurs.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as LTMC (for Migration Cockpit) or LTMOM (for Migration Object Modeler) to manage migration objects and rules.
  Migration Cockpit: Understand how to use the SAP S/4HANA Migration Cockpit effectively, including how to define and manage mapping rules.
  Data Migration Best Practices: Review best practices for data migration in SAP, which can help prevent similar issues in the future.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.