Originally Posted by
Kiwi Sapper
Having worked for Fruitfed Supplies, a subsidiary of PGG Wrightson, I can dispute that.
It is, as foxhound has said, because their computerised system required it. Such systems are set up by geeks who don't know much about the world but a lot about how to put mandatory entry fields in data input screens regardless of whether they are needed or not. It was probably suggested by some head office pen pusher that an address "would be nice" and then "shit happened."
The same thing occurred when I was with them and they fiddled their system to check spray applicator licences for dangerous agricultural chemicals.