something missing here
it's important to read the whole rule.
4.2 CALL SHOT(BCA)
In Call Shot, obvious balls and pockets do not have to be indicated. It is the opponent’s right to ask which ball and pocket if he is unsure of the shot. Bank shots and combination shots are not considered obvious, and care should be taken in calling both the object ball and the intended pocket. s,When calling the shot, it is never necessary to indicate details such as the number of cushions, banks, kisses, caroms, etc. Any balls pocketed on a foul remain pocketed, regardless of whether they belong to the shooter or the opponent. The opening break is not a “called shot.” Any player performing a break shot in 8-Ball may continue to shoot so long as any object ball is legally pocketed on the break."
Thus a player continues to play only if his object ball is pocketed in the called pocket.
I never played under APA rules but I just read them and can find no reference to
calling a pocket. They talk about the object ball but it sticks in my throat that you can designate an object ball without at the same time calling the pocket. IMHO that is about the stupidest thing I ever heard of. Can someone enlighten me here? If this is true ,I would never play in an APA league.