Interfaces do not have the ability to create inputs

6.7-160 / 6.7-198

Interfaces do not have the ability to create inputs.
However, in operations or classes it works fine.

You can soon as you add an operation to your interface.

Yes, indeed!
How long has this been going on? It seemed to me that in the past it was possible to create it in any case and then assign it to the process.