Extends: Modifying keys, Adding keys, Drag & Drop keys.
Main success scenario: If the entered data passes the validation, it is sent to the backend and saved to the key database.
Alternative scenario: User enters data that fails the field validation, the input field is marked as invalid (e.g. with a red color and some information text) and the data is NOT sent to the backend.
Alternative scenario: User enters data that violates a validation rule, an error message is shown and the data is NOT saved to the key database.
Error scenario: Technical problems while persisting to the key database. The user is informed about the problem.
Postcondition: The updated key is persisted to the database.