How To Fix CNV_10020492 - Relationship data for &1 &2 is already contained in table &3

CNV_10020492 - Overview

• Message type: E = Error

• Message class: CNV_10020 - Message class for package 10020

• Message number: 492

• Message text: Relationship data for &1 &2 is already contained in table &3

What causes this issue?

The relationship data for &V1& &V2& is meant to be copied from a
cluster table into a transparent LOR/ROR table. However this data
already exists in table &V3&.

System Response

The data is not copied.

Error message extract from SAP system. Copyright SAP SE.

CNV_10020492 - Details

• The SAP error message CNV_10020492 indicates that there is a duplicate entry in the relationship data for a specific object (denoted by &1 and &2) in the specified table (denoted by &3). This error typically arises during data migration or conversion processes, particularly when using SAP's data migration tools or during system upgrades.
  
  Cause:
  
  Duplicate Data: The most common cause of this error is that the data being imported or migrated already contains entries that are identical to those already present in the target table. This can happen if the data extraction process did not filter out existing records or if the same data is being processed multiple times.
  Incorrect Mapping: If the mapping of data from the source to the target is not correctly defined, it may lead to attempts to insert duplicate records.
  Data Integrity Issues: There may be underlying data integrity issues in the source system that lead to duplicates being