How To Fix CNV252 - 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: 252

• 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 CNVFIELDS record

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

PACKID = &V1&
TABNAME = &V2&
FIELDNAME = &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 CNV252 - Not allowed value for source package &4 was changed to &1 ?

  The SAP error message CNV252 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 is not allowed and has been changed to a default or acceptable value.
  Cause:
  
  
  Invalid Source Package Value: The source package value provided does not meet the criteria defined in the system. This could be due to:
  
  The value being outside of the expected range.
  The value not existing in the predefined list of acceptable values.
  A mismatch in data types or formats.
  
  
  
  Configuration Issues: There may be configuration settings in the migration tool or the source system that restrict the values that can be used.
  
  
  Data Integrity Issues: The data being migrated may have inconsistencies or errors that lead to the use of an invalid package value.
  
  
  Solution:
  
  
  Check Source Package Values: Review the source package values being used in the migration process. Ensure that they conform to the expected values defined in the system.
  
  
  Update Configuration: If necessary, update the configuration settings in the migration tool to allow for the desired source package values.
  
  
  Data Validation: Validate the data being migrated to ensure that it does not contain any invalid or unexpected values. Cleanse the data if necessary.
  
  
  Consult Documentation: Refer to the SAP documentation or migration tool guidelines for the specific requirements regarding source package values.
  
  
  Error Handling: Implement error handling in your migration process to catch and log such issues for further analysis.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error message or provide additional context.
  Migration Tools: Familiarize yourself with the specific migration tools being used (e.g., SAP S/4HANA Migration Cockpit, SAP Data Services) and their requirements for source package values.
  Community Forums: Engage with SAP community forums or support channels for insights from other users who may have encountered similar issues.
  
  By addressing the root cause of the invalid source package value and ensuring compliance with system requirements, you can resolve the CNV252 error and proceed with your data migration successfully.