How To Fix CNV254 - Not allowed value for source package &4 was changed to &1

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV - Conversion: Messages for Conversion Services (CNCC)

• Message number: 254

• Message text: Not allowed value for source package &4 was changed to &1

What causes this issue?

Not allowed value for source package &V4& was corrected to &V1&

System Response

In CNVDOMS record

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

PACKID = &V1&
DOMNAME = &V2&
ROLLNAME = &V3&,
the source package number was corrected (changed from &V4& to &V1&)

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV254 - Not allowed value for source package &4 was changed to &1 ?

  The SAP error message CNV254 indicates that there is an issue with the source package value in a data migration or conversion process. Specifically, the message states that the value for the source package (denoted as &4) is not allowed and has been changed to a default or acceptable value (denoted as &1). This typically occurs during data migration activities, such as when using the SAP S/4HANA Migration Cockpit or other data transfer tools.
  Cause:
  
  Invalid Source Package Value: The source package value provided does not match the expected values defined in the system. This could be due to a typo, incorrect configuration, or an unsupported package type.
  Configuration Issues: The system may not be properly configured to accept the specified source package, leading to the automatic adjustment of the value.
  Data Mapping Errors: There may be issues in the mapping of data from the source system to the target system, causing the system to reject the provided value.
  
  Solution:
  
  Check Source Package Value: Verify the source package value you are trying to use. Ensure that it is valid and matches the expected values in the SAP system.
  Review Configuration: Check the configuration settings related to the data migration process. Ensure that the source package is correctly defined and that all necessary settings are in place.
  Consult Documentation: Refer to the SAP documentation for the specific migration tool you are using. This may provide insights into valid source package values and any restrictions that may apply.
  Adjust Mapping: If the error is related to data mapping, review the mapping rules and ensure that they are correctly set up to handle the source package values.
  Contact SAP Support: If you are unable to resolve the issue, consider reaching out to SAP support for assistance. They may provide additional insights or patches if this is a known issue.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on data migration issues.
  Migration Cockpit: If you are using the SAP S/4HANA Migration Cockpit, review the guidelines and best practices for data migration to ensure compliance with the expected configurations.
  Community Forums: Engage with the SAP Community or forums where other users may have encountered similar issues and can share their solutions.
  
  By following these steps, you should be able to identify the cause of the CNV254 error and implement a suitable solution.