How To Fix CNV_20800066 - &1: hidden field &2 does not contain a value

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20800 - Message class for CNV_20800

• Message number: 066

• Message text: &1: hidden field &2 does not contain a value

What causes this issue?

During the conversion &V1& (account groups are given in brackets), the
account group changes. Other than for the old one, the field "&V3&" &V2&
(table key without client is given in brackets) is a hidden field.
However no value has been stored for this field anyway.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_20800066 - &1: hidden field &2 does not contain a value ?

  The SAP error message CNV_20800066 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 that a hidden field (denoted as &2 in the error message) is expected to contain a value, but it is currently empty or not populated.
  Cause:
  
  Missing Data: The most common cause is that the source data does not have a value for the specified hidden field. This can happen if the data extraction process did not capture all necessary fields or if the data was not properly formatted.
  Mapping Issues: There may be a mapping issue where the source field is not correctly mapped to the target field in the migration template.
  Configuration Errors: Incorrect configuration settings in the migration tool or the data model can lead to this error.
  Data Validation Rules: The target system may have validation rules that require certain fields to be populated, and if these rules are not met, the error will occur.
  
  Solution:
  
  Check Source Data: Review the source data to ensure that the hidden field (&2) is populated. If it is missing, you may need to update the source data to include the necessary values.
  Review Mapping: Verify the mapping configuration in the migration tool. Ensure that all required fields are correctly mapped from the source to the target.
  Update Migration Template: If you are using a migration template, ensure that it includes all necessary fields and that the hidden field is correctly defined.
  Consult Documentation: Refer to the SAP documentation for the specific migration tool you are using to understand the requirements for the hidden field and any related validation rules.
  Test Migration: After making the necessary adjustments, perform a test migration to see if the error persists. This can help identify if further changes are needed.
  
  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 found effective.
  Data Migration Best Practices: Familiarize yourself with best practices for data migration in SAP, including data cleansing, validation, and testing strategies.
  
  If the issue persists after following these steps, it may be beneficial to consult with an SAP expert or support team for further assistance.