How do you display pending changes in a form?

I'm currently building a simple web frontend that allows the people from the management department to directly make some changes to our user accounts in active directory.

Changes they can do directly are, for example, the room number, the phone number, the expiration date.

Other changes need actions from our IT department. So, if a person moves to a different department, or his employment status changes (intern, employee, guest, ...) the change is stored in a database and a ticket is opened in our ticket system. Then the changes are handled by the IT department.

Now I need a distinctive way to display that the changes are pending, and that the user should not try to make the change again until the pending changes have been processed.

I thought about just adding a label next to the fields, but judging on past experiences with the people in management (I've been working on something like this before) I'm pretty sure they find a way to just not see it, resulting in more tickets than necessary.

I found this question, but the suggested answers are not really a good fit, because they are centered on merging information.