Just to clarify, as I can see my question is a tad vague.
I have an Airbus PDP (Procedure data package which is an Airbus produced document) and it says for a slats fault or flaps locked (essentially where flaps or slats are locked in an unusual config for landing) then on he staus page it has an approach speed correction. I used +25 as an arbitrary figure.
It says the approach speed correction on the status page is dependent on current flap and slat position and is updated for landing?
I can't find that anywhere in the FCOM.
Cheers for the answers so far guys.