There is already an entry &1 &2 in the database

Message type: E = Error

Message class: OO - Class Builder/API

Message number: 016

Message text: There is already an entry &1 &2 in the database



What causes this issue?

You tried to insert an entry in the database that already exists. This
is not possible. The action is terminated.

Error message extract from SAP system. Copyright SAP SE.