How To Fix CNV251 - Source package set to &4 for the field &3 of the table &2

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 251

• Message text: Source package set to &4 for the field &3 of the table &2

What causes this issue?

Source package number was not maintained

System Response

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

&TECHNICAL-INFO&
Record with the following primary key vallues
PACKID = &V1&
TABNAME = &V2&
FIELDNAME = &V3&,
was modified in the table CNVFIELDS - the source package was set to &V4&
.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV251 - Source package set to &4 for the field &3 of the table &2 ?

  The SAP error message "CNV251 Source package set to &4 for the field &3 of the table &2" is related to the SAP data migration process, particularly in the context of the SAP S/4HANA conversion or data migration projects. This error typically indicates that there is an issue with the source package configuration for a specific field in a table during the data migration process.
  Cause:
  
  Incorrect Source Package Configuration: The source package for the specified field in the table is not set correctly. This could be due to a misconfiguration in the data migration settings or an issue with the mapping of fields between the source and target systems.
  Missing or Incomplete Data: The data that is supposed to be migrated may be missing or incomplete, leading to the error when the system tries to process the migration.
  Field Mapping Issues: There may be discrepancies in how fields are mapped from the source to the target system, causing the migration tool to fail in identifying the correct source package.
  
  Solution:
  
  Check Source Package Configuration: Review the configuration of the source package for the specified field in the migration settings. Ensure that it is correctly set up and that all necessary mappings are in place.
  Validate Data: Ensure that the data in the source system is complete and correctly formatted. Check for any missing entries or inconsistencies that could lead to the error.
  Review Field Mappings: Go through the field mappings to ensure that they are correctly defined. Make sure that the source fields correspond accurately to the target fields in the SAP system.
  Consult Documentation: Refer to the SAP documentation related to the specific migration tool or process you are using (e.g., SAP S/4HANA Migration Cockpit, SAP Data Services) for any additional troubleshooting steps or configuration guidelines.
  Run Migration in Test Mode: If possible, run the migration in a test mode to identify any other potential issues before executing it in the production environment.
  
  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.
  Migration Tools: Familiarize yourself with the specific migration tools being used (e.g., SAP S/4HANA Migration Cockpit, SAP Data Services) and their documentation for best practices and troubleshooting tips.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.