
You use3d to be able to block (endorse) not for show, progeny not for registration , and not eligible for export pedigree. The KC only changed it a few years ago, and only allow the latter two.
I have sold all the pups I have ever bred this way, and have to remember to lift it from my own.
I have just removed these restrictions from four of my pups. My own bitch (aged 3), a four year old male, and two 2 1/2 year old sisters who are all going to be bred from for the first time, but only once they had their hips and eyes tested with good results