How To Fix CNV_DMC_SIN263 - Accounting Data: &1 / &2 already exists

CNV_DMC_SIN263 - Overview

• Message type: E = Error

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

• Message number: 263

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

What causes this issue?

Within this migration object you can only extend new accounting 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_SIN263 - Details

• The SAP error message CNV_DMC_SIN263, which states "Accounting Data: &1 / &2 already exists," typically occurs during data migration or conversion processes, particularly when using the SAP Data Migration Cockpit (DMC) or similar tools. This error indicates that the system has detected duplicate accounting data entries that are being processed, which violates the uniqueness constraints of the accounting data in the target system.
  
  Cause:
  
  
  Duplicate Entries: The most common cause of this error is that the accounting data being imported or migrated already exists in the target system. This could happen if:
  
  The same data is being processed multiple times.
  There are overlapping data sets being migrated from different sources.
  The data extraction process did not filter out existing records properly.
  
  
  
  Incorrect Mapping: If the mapping of source data to target data is not set up correctly, it may lead to attempts to insert records that already exist.
  
  
  Data Integrity Issues: There may be issues with data