Presume that you are referring to the TABs.
Usually zooming or panning on a defined view causes the warning to appear.
Double clicking on the TAB or right clicking and selecting "restore view" will remove it until your next pan or zoom.
For the View Map it usually means that you have changed the name of one of the attributes that define that view and since AC does not update that automatically then it gives a warning.
Eduardo Rolón AIA NCARB
AC27 US/INT -> AC08Macbook Pro M1 Max 64GB ram, OS X 10.XX latest
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