7. The method of claim 1 , the constraint engine automatically comparing the first electronic data and the constraint in response to the field being populated with the first electronic data.
7. The method of claim 1 , the constraint engine automatically comparing the first electronic data and the constraint in response to the field being populated with the first electronic data. 8. The method of claim 7 , the computing device, by the constraint engine, automatically comparing the first electronic data and the constraint in response to the field being populated with the first electronic data manually entered into the field by the user of the computerized tax return preparation system.