How To Fix CNV_10020764 - &1 &2: No rule was assigned to evaluate &3

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_10020 - Message class for package 10020

• Message number: 764

• Message text: &1 &2: No rule was assigned to evaluate &3

What causes this issue?

There is a rule assignment for a component of the field &V3&. &V3&
itself is defined as a component of a non-transparent field. Therefore
an evaluation rule has to be assigned for &V3& as well. For &V3& no rule
was assigned (release &V4&).

System Response

Evaluation is not possible.

How to fix this error?

Add a rule assignment for &V3&.
&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_10020764 - &1 &2: No rule was assigned to evaluate &3 ?

  The SAP error message CNV_10020764 typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that there is no rule assigned to evaluate a specific field or data element during the conversion process.
  Cause:
  
  Missing Mapping Rules: The most common cause of this error is that the mapping rules for the specific data element (indicated by &3 in the error message) have not been defined or are missing in the configuration.
  Incorrect Configuration: The configuration settings for the migration or conversion process may not be set up correctly, leading to the system not being able to find the necessary rules.
  Data Structure Changes: If there have been changes in the data structure or if the source system has different data formats, the existing rules may not apply, resulting in this error.
  
  Solution:
  
  Check Mapping Rules: Review the mapping rules in the migration cockpit or the relevant configuration area. Ensure that there are rules defined for the data element that is causing the error.
  Define Missing Rules: If no rules are defined, you will need to create the necessary mapping rules for the data element. This may involve specifying how data from the source system should be transformed or mapped to the target system.
  Review Configuration: Go through the configuration settings to ensure that everything is set up correctly. This includes checking the source and target structures and ensuring that they align.
  Consult Documentation: Refer to the SAP documentation or guides related to the specific migration or conversion process you are using. This can provide insights into how to set up the rules correctly.
  Testing: After making changes, perform a test run of the migration or conversion process to ensure that the error is resolved.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on data migration issues.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues and can share their solutions.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit, which often includes troubleshooting sections for common errors.
  
  If the issue persists after following these steps, it may be beneficial to reach out to SAP support for further assistance.