What I did here was created a sheet that pops out on a dashboard and covers your sheet if Param 1 = Param 2. (I think you'll really want to do this on a dashboard, BTW.)
I just did that one condition.
But you can have a whole bunch of checks going on, and if any violation occurs, then something like this will pop out.
For now I have just a text value displaying, but you can have a calc field that gets built with the condition that is violated, and you can display that calc field instead.
For now I'm just putting this rudimentary example out here to show what you can do. If you are interested in pursuing this, I can work with you to make it more robust for all the conditions.
Let me know if you want to do something like this.
Tableau Forum Example A.twbx 37.5 KB
Thanks for the tip. I should have mentioned that the attached workbook was a very simple example which was why it wasn't in a dashboard versus just a single sheet.
I'll play around with having a pop up that covers the sheet. I have about 14 dashboards within my published workbook so I need to investigate if there are any performance issues associated with this route. I'll play around with the sample you've attached and see if I need your help refining it. I truly appreciate your offer for help on making it more robust.
Hope you have a great weekend!