When you've had others who are reputable & knowledgable in the breed judge & certify that your dog is not only the image of the breed standard but is the best of the best. When you've worked your dog over & over again to prove that he can do it & succeed & then only consider him if he is the best of the best. When you've had him completely genetically health tested (OFA, etc) & it's determined that he's the best of the best.
We don't need any back yard breeders & puppy peddlers in the world ruining these breeds. Just b/c a dog has a penis & testicles doesn't make him breed worthy.