5. The method of claim 1 , the constraint comprising a specified data format required by the tax authority requirement, wherein the output is generated in response to the constraint engine determining that the first electronic data is a format different than a specified data format.
5. The method of claim 1 , the constraint comprising a specified data format required by the tax authority requirement, wherein the output is generated in response to the constraint engine determining that the first electronic data is a format different than a specified data format. 6. The method of claim 5 , the specified data format comprising a data type and a number of characters of the data type.