How To Fix CNV_10020687 - &1 &2: Length of passed parameter &4 and rule parameter &3 do not match

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_10020 - Message class for package 10020

• Message number: 687

• Message text: &1 &2: Length of passed parameter &4 and rule parameter &3 do not match

What causes this issue?

The rule assigned to the mentioned non-transparent field component has
rule parameters. For the rule parameter &V3& the passed parameter &V4&
has been assigned. The length of the objects is mentioned in brackets
and does not match.

How to fix this error?

Go to activity <ZK>Edit Settings for Non-transparent Fields</>. For the
problematic entry specify a suitable passed parameter for the rule
parameter &V3&.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_10020687 - &1 &2: Length of passed parameter &4 and rule parameter &3 do not match ?

  The SAP error message CNV_10020687 typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates a mismatch between the length of a parameter being passed and the expected length defined in the rules or structures.
  Cause:
  The error message CNV_10020687 is triggered when:
  
  The length of a parameter (e.g., a field in a data record) being processed does not match the expected length defined in the migration rules or data structure.
  This can happen due to:
  
  Incorrect data formatting or data type mismatches.
  Changes in the data model or structure that have not been reflected in the migration rules.
  Manual data entry errors or inconsistencies in the source data.
  
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check the Data Source:
  
  Review the source data to ensure that the lengths of the fields match the expected lengths defined in the target structure.
  Look for any fields that may have been truncated or incorrectly formatted.
  
  
  
  Review Migration Rules:
  
  Examine the migration rules or mapping configurations to ensure that they are correctly defined and that the expected lengths are accurate.
  If there have been changes to the target structure, update the migration rules accordingly.
  
  
  
  Data Validation:
  
  Implement data validation checks before running the migration to catch any discrepancies in field lengths.
  Use tools or scripts to validate the data against the expected schema.
  
  
  
  Adjust Data Types:
  
  If necessary, adjust the data types or lengths in the source data to match the target requirements.
  This may involve modifying the data in the source system or transforming it during the migration process.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to the specific migration tool you are using for any additional guidance or known issues.
  
  
  
  Testing:
  
  After making adjustments, perform a test migration with a smaller dataset to ensure that the issue is resolved before proceeding with the full migration.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context.
  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 SAP community forums or support channels for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.