What action should be taken if a service is deemed illegal?

When a service is deemed illegal in volleyball, calling a fault and awarding the opponents a point is the prescribed action. This is in line with the rules of the game, where an illegal serve—such as one that violates the rotation, touches the net, or is performed improperly—results in a loss of the serve for the offending team. The opposing team is then awarded a point and gains the right to serve.

This procedure maintains the integrity of the game, as it ensures that all players adhere to the established rules. In contrast, replaying the point would not appropriately penalize the infraction, and simply notifying the offending player does not provide a corrective mechanism for the violation. Calling it out immediately might misinterpret the situation, as illegal services need to be formally recognized as faults for an effective enforcement of the rules.