You are doing a Multi-Family project, and the total floor area entered under the Dwelling Units tab does not match the total floor area of the Zone. These two numbers must match.
At the Zone level of the tree, look at the Dwelling Units tab and make sure the total area (unit floor area times the number of units) matches the floor area for the zone. Do not use fractional values, as these usually do not add up.
In the Zone level of the tree, look at the entries for the Rooms under the Floor Area entry and be sure you have the correct numbers entered.
← Error 1012