DMS Input - Same Object-IDs in List

[darenegade]

Describe the bug A clear and concise description of what the bug is.

The DMS Input allows the input of the same object

Expected behavior A clear and concise description of what you expected to happen.

Do nothing on Input of same Object COO

Additional context Add any other context about the problem here.

https://git.muenchen.de/digitalisierung/digiwf/digiwf-support/-/issues/474