Determine which transactional and data functions will be deleted

The (data and transactional) functions that will be deleted from the existing system are identified from the enhancement proposal and the number of function points they represent is determined. For deleted functions an impact factor of 0.40 is used. The number of enhancement function points for a single deleted function is determined as follows:

EFP DELETED = FP DELETED x 0.40

This means, for example, that 6 function points deleted will result in 6 x 0.40 = 2.4 enhancement function points.