How To Fix CNV_10020751 - &1 &2: no rule was assigned to evaluate nested component &3

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_10020 - Message class for package 10020

• Message number: 751

• Message text: &1 &2: no rule was assigned to evaluate nested component &3

What causes this issue?

The evaluation rule of the component requires the evaluation of the
nested component &V3&. 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.

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_10020751 - &1 &2: no rule was assigned to evaluate nested component &3 ?

  The SAP error message CNV_10020751 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 a missing rule for evaluating a nested component in the data structure being processed.
  Cause:
  The error arises when the system encounters a nested component (like a sub-structure or a field within a structure) for which no conversion or mapping rule has been defined. This can happen due to:
  
  Incomplete Configuration: The migration or conversion project may not have all the necessary rules defined for the data being processed.
  Data Structure Changes: If the data structure has changed (e.g., during an upgrade or migration), existing rules may no longer apply.
  Missing Custom Logic: If custom logic is required for specific fields and it hasn't been implemented, the system won't know how to handle those fields.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Migration Rules: Review the migration rules defined in your project. Ensure that there are rules for all nested components that are being processed.
  
  
  Define Missing Rules: If you identify any nested components without rules, create the necessary mapping or conversion rules for those components.
  
  
  Review Data Structure: Ensure that the data structure you are migrating matches the expected structure in the target system. If there have been changes, update your rules accordingly.
  
  
  Consult Documentation: Refer to the SAP documentation for the specific migration tool you are using. There may be guidelines or examples for defining rules for nested components.
  
  
  Testing: After making changes, run a test migration to ensure that the error is resolved and that data is being processed correctly.
  
  
  Seek Support: If you are unable to resolve the issue, consider reaching out to SAP support or consulting with an SAP expert who has experience with data migration.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional guidance.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit or the specific tool you are using for data migration.
  Community Forums: Engage with the SAP Community or forums where other users may have encountered and resolved similar issues.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to ensure a successful data migration process.