Some records were created before an event took place, usually in preparation for the event itself. The issuance of a marriage license does not guarantee that the marriage ever took place. The announcement of marriage banns also is not evidence of the actual marriage.
Even a church bulletin announcing my baptism that day in church does not guarantee it took place. It does indicate the event was planned and scheduled for that day. And, in all likelihood, it did take place.
But if one document said something was going to happen and other reliable information indicated that event did not happen, remind yourself that not every event intended to be actually comes to pass.