Thanks Ian for your reply.
We have 3 DHCP servers, so the response could come from any which are available. Leaving as DHCP i would need to use the deny feature on 2 of the servers i guess to make sure only the server i choose to assign the reservations handles the requests.
Out of curiosity do you know what the option to 'Replace any existing AP provisioning with controller-based provisioning settings' is exactly and what else this would affect if we were to select this?
Thanks