Codes are great - quick & easy, makes it clear exactly what you have.....except if you don't use them all the time.....
Police use codes. They use them all the time. There are a few codes that only come up occasionally - and people don't know what they are, and have to check up to find out. Newbies regularly give out the wrong code, and give the Comms Operator, and other patrols an absolute heart attack (eg instead of calling a "603" which is a traffic stop, they called a "604" which is a stolen car, which they then proceeded to tell everyone the car had two occupants, and was travelling along particular roads, and all patrols stat heading their way, ready for a chase!)
Unless you use codes all the time, and therefore familiar with them, they can become very cumbersome, and defeat the purpose of using them in the first place.
I heard a rumour some time ago that MFS wanted to get rid of the K codes, but there was some opposition to that....don't know if that was true...can someone in the know perhaps clarify...?
Pip