How To Fix D9746 - Key &1 already exists

D9746 - Overview

• Message type: E = Error

• Message class: D9 - Environment Management System

• Message number: 746

• Message text: Key &1 already exists

What causes this issue?

You attempted to create a data record with the key &V1&.
A data record with the logical key that you entered already exists,
although possibly at a time other than on the key date &V2&.

System Response

If there are inconsistencies with regard to the change number and key
date when the data record is being created for the key date, the SAP
System refuses to create the data record.

How to fix this error?

The keys must be unique. Change the existing key or execute the change
with a change number.

Error message extract from SAP system. Copyright SAP SE.

D9746 - Details

• The SAP error message D9746 ("Key &1 already exists") typically occurs when you are trying to create or insert a record in a database table or a data structure where a unique key constraint is violated. This means that the key you are trying to use already exists in the system, and the database does not allow duplicate entries for that key.
  
  Cause:
  
  Duplicate Key Entry: You are attempting to insert a record with a key that already exists in the database.
  Data Migration Issues: If you are migrating data from one system to another, there may be conflicts with existing keys.
  Incorrect Logic in Custom Code: If you have custom ABAP code or enhancements, there may be logic that does not properly check for existing keys before attempting to insert a new record.
  Concurrent Processing: Multiple processes may be trying to insert the same key at the same time.
  
  
  Solution:
  
  Check Existing Records: Before inserting a