The enhancement proposal should specify the transactional and data functions to be added to the application. From the proposal it should be possible to calculate the size of the functions added by applying the standard FPA methodology. The impact factor for added functions is 1.00.

Hence, the number of enhancement function points for a single added function is determined as follows:

EFP
_{ADDED}
= FP
_{ADDED}

This means, for example, that 3 function points added will result in 3 enhancement function points.