A 600 amp panel is almost always a branch panel. An 800A might be a branch panel or might be a switchboard (distribution panel really) depending on the vendor.
Changing your documents is too hard right now. You have to find the panel on the floor plans. Delete the panel schedule. Either change the family to a branch panel or edit the family and change the parameter to make it a branch panel instead of a switchboard. Then you need to recreate the panel schedule.
It's like 5 minutes of work for something that should take seconds. Thanks ya'll!
