The Building you have described has Zones input as Multifamily Common Areas, but no Zones are input as actual Multifamily Dwelling Units. CBECC considers this as a Nonresidential Building, so all of the Zone Occupancies should be changed over to Nonresidential instead of Multifamily Common areas.
Make this change at the Zone level of the Building Tree, Zone Type input, or you could add into the model Zones designated as Multifamily Dwellings.
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