You should be aware that they have the right to inspect your premises and breeding records at any time. If your record keeping doesn't meet their standards, they can refuse to register your puppies, impose a large fine and suspend you from registration privileges for life. Before going any further, think hard about your reasons for wanting to breed a litter. Nature doesn't control our pets' reproductive careers any more - we do. Nature's way is very different than ours.
Nature never intends for all animals to reproduce.
In the wild, nature sees to it that only the strongest, fittest and smartest animals survive long enough to have babies. Nature only allows females to conceive when the food supply and environment is suitable to assure a good future. We humans allow our animals to reproduce anytime, no matter if there is a future for them or not. We're doing it for the kids. Seeing the miracle of birth isn't all it's cracked up to be.