ACL in storing a ticket in AgentTicketProcess does not work with Property Process.

[svenoe]

There is a bug when trying to store a ticket in AgentTicketProcess. The current assumption is that adding a field value for "Properties->Process->ActivityID/ProcessID" works for the rendering and AJAX of the mask, but not for storing it. Please ask me or @StefanAbel-OTOBO for further details.

[stefanhaerter]

I did some debugging and as far as I saw, the problem is: The responsible ACL is based on the ActivityEntityID. For a yet (to me) unknown reason, only the ActivityDialogEntityID is filled in the AgentTicketProcess module (except if a new process ticket is created and the process is selected, therefor the rendering restriction works), but not the ActivityEntityID. After this, upon storing, the ActivityEntityID is undef which leads to "wrong" PossibleValues and thus to failing EditFieldValueValidate.