How To Fix CNV_20900064 - &1: hidden field &2 contains value &4

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20900 - Message class for package CNV_20900

• Message number: 064

• Message text: &1: hidden field &2 contains value &4

What causes this issue?

During conversion &V1& (account groups in brackets), the account group
will change. Other than for the old account group, field "&V3" &V2
(table key without client in brackets) is hidden for the new one.
However old value "&V4&" has been stored for this field.

System Response

Old value "&V4&" is transferred. However it is not visible in the
maintenance view for the vendor.

How to fix this error?

Check if you really do not want the hidden value to be visible. If you
do not want it to be visible, you should delete value "&V4&", because
otherwise it may accidentally be used by other transactions or reports.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_20900064 - &1: hidden field &2 contains value &4 ?

  The SAP error message CNV_20900064 typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that a hidden field in the data being processed contains a value that is not acceptable or valid according to the business rules or data model of the target system.
  Cause:
  
  Invalid Data: The value in the hidden field does not meet the expected criteria or constraints defined in the target system.
  Data Mapping Issues: There may be a mismatch between the source and target data structures, leading to incorrect or unexpected values being transferred.
  Configuration Errors: The configuration settings for the migration process may not align with the requirements of the target system.
  Data Quality Issues: The source data may contain inconsistencies or errors that were not addressed prior to migration.
  
  Solution:
  
  Review the Error Message: Analyze the specific details provided in the error message, including the hidden field name and the value that is causing the issue.
  Check Data Mapping: Ensure that the data mapping between the source and target systems is correctly defined. Validate that all required fields are being populated correctly.
  Data Validation: Perform a thorough validation of the source data to identify any inconsistencies or invalid values. Cleanse the data as necessary to meet the target system's requirements.
  Adjust Configuration: If applicable, review and adjust the configuration settings for the migration process to ensure they align with the target system's expectations.
  Consult Documentation: Refer to SAP documentation or migration guides related to the specific migration scenario you are working on for additional insights and best practices.
  Testing: After making the necessary adjustments, conduct a test migration with a smaller dataset to verify that the issue has been 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 guidance on data migration issues.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Data Migration Tools: Familiarize yourself with the tools and functionalities available in the SAP S/4HANA Migration Cockpit or other data migration tools you are using, as they may have built-in validation and error handling features.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.