Report Parameters Cannot be Located in App

These are dynamic, fill-in-the-blank parameters.  They don't exist anywhere except when/where they are used.  Then OneStream creates them on the fly by prompting the user by the name of the parameter.

You can literally type anything you want in between the |! !| in various parts of a CubeView, such as Row, Column, or POV, and what you typed in the |! !| will be what the user is prompted with when the CubeView is run.

I've seen things like |!Enter Time (YYYYMNN)!| used like this before and the user is required to type 2025M1 in the parameter prompt.

IMO They're to be avoided in practice.  If a user is required to manually type in an entity name and cannot spell that name correctly, the report will not show data and usually the admin and/or support will get a call.