How To Fix CNV_DMC_SIN262 - Sales Data: &1 / &2 already exists

CNV_DMC_SIN262 - Overview

• Message type: E = Error

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

• Message number: 262

• Message text: Sales Data: &1 / &2 already exists

What causes this issue?

Within this Migration Object you can only extend new sales data. You
can't change already existing entries.

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?

Delete these records from the template/staging table.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

CNV_DMC_SIN262 - Details

• The SAP error message CNV_DMC_SIN262 typically occurs during data migration processes, particularly when using the SAP Data Migration Cockpit (DMC) or similar tools. This error indicates that there is an attempt to insert sales data that already exists in the target system, which violates the uniqueness constraints of the database.
  
  Cause:
  
  
  Duplicate Data: The most common cause of this error is that the sales data being migrated already exists in the target system. This could be due to:
  
  Previous migration attempts that were not fully cleaned up.
  Data being migrated from multiple sources that contain overlapping records.
  Incorrect mapping or transformation rules that lead to duplicate entries.
  
  
  
  Data Integrity Constraints: The target database may have constraints (like primary keys or unique indexes) that prevent the insertion of duplicate records.
  
  
  
  Solution:
  
  
  Identify Duplicates: Before migration, check the source data for duplicates. You can use tools or scripts to identify records that have the same key fields (like sales order