I marvel why I answer’d not again; But that’s all one: omittance is no quittance.

If we offend against any of the other rules (A's or B's) - that is if we, say, utter the formula incorrectly, or if, say, we are not in a position to do the act because we are, say, married already, or it is the purser and not the captain who is conducting the ceremony, then the act in question, e.g. marrying, is not successfully performed at all, does not come off, is not achieved.

Sesame-crusted chicken with 'quickled' slaw

We have a place for lawbreaking citizens like you.