If Team A is penalized because a player entered the game without being recorded in the scorebook first, when is the penalty enforced?

The penalty for a player entering the game without being recorded in the scorebook is enforced during the next live ball. This is because in basketball, specifically within the framework of rules established by associations like the IAABO, most penalties for violations involving player participation are addressed when the game resumes with active play. It provides a timely way to manage the game's integrity and ensures that all players are accounted for before resuming action.

Enforcement during a live ball allows officials to maintain the flow of the game while also addressing the infraction appropriately. This means that as play continues, officials are responsible for ensuring that all players are eligible and properly recorded, thus preventing any potential disadvantage to either team.

Other scenarios, such as during a foul or at the end of the half, do not apply in this case because those situations do not provide an opportunity for immediate enforcement of an entry infraction. Similarly, enforcement after the game does not align with the continuous nature of officiating during the game itself.