1938111 - Error Message "Instance with the same key already exists", While Creating a Product Category

When you try to create a new Hierarchy in Product Category, system throws below error message:

Instance with the same key already exists

1. Go to Product Data work center.
2. Select Product Categories view.
3. Select New Hierarchy button.

System throws above error message.

The issue might have occurred because of locking (ex: same screen open in another window or another user tried to create the hierarchy)

Please check whether any other user is trying to create a New Hierarchy and try to create the Product category again.

KBA , LOD-CRM , Cloud for Customer , How To