How To Fix CNV_DMC_SIN515 - Changing of already existing values is not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_DMC_SIN - Messages for s-innovations migration

• Message number: 515

• Message text: Changing of already existing values is not allowed

What causes this issue?

You transferred the value &V1& in one of the fields provided on sheet
'Basic Data' which has already an existing value &V2& in the related
product master &V3&.

System Response

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

How to fix this error?

It is not allowed to change already existing values in the related
product master: Therefor you can use the Mass Maintenance App. For
further information, refer to online documentation of the Mass
Maintenance App.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_DMC_SIN515 - Changing of already existing values is not allowed ?

  The SAP error message CNV_DMC_SIN515 ("Changing of already existing values is not allowed") typically occurs during data migration or data conversion processes, particularly when using the SAP Data Migration Cockpit (DMC) or similar tools. This error indicates that the system is trying to change a value that already exists in the target system, which is not permitted under the current configuration or rules set for the migration process.
  Cause:
  
  Duplicate Values: The error often arises when the migration process attempts to insert or update records that already exist in the target system with the same key or unique identifier.
  Data Integrity Constraints: The target system may have constraints that prevent the modification of existing records, such as primary key constraints or unique constraints.
  Configuration Settings: The migration settings may be configured to disallow updates to existing records, which can lead to this error if the migration process attempts to do so.
  
  Solution:
  
  Check for Duplicates: Review the data being migrated to ensure that there are no duplicate entries that would conflict with existing records in the target system.
  Adjust Migration Settings: If the intention is to update existing records, check the migration settings in the DMC to allow updates. This may involve changing the configuration to permit updates instead of inserts.
  Data Cleansing: Cleanse the data before migration to ensure that it does not contain any values that would violate the constraints of the target system.
  Use a Different Approach: If the existing records need to be preserved, consider using a different approach, such as creating new records with different identifiers or merging data as needed.
  Consult Documentation: Refer to the SAP documentation for the Data Migration Cockpit or the specific migration tool being used for detailed guidance on handling such errors.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or solutions for this specific error message.
  Data Migration Cockpit Documentation: Review the official SAP documentation for the Data Migration Cockpit for best practices and troubleshooting tips.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the root cause of the error and implement a suitable solution to resolve it.