Acceleration Gates in mission and exploration deadspaces may be locked until certain requirements have been met. Those can range from ship restrictions, usually found on the first acceleration gate leading into the respective site, to requiring certain key items that usually drop within the closer area or need to be acquired by other means. In rare cases, acceleration gates may also be locked by skill requirements.
In all cases where an Acceleration Gate is locked, the player will receive a message stating which requirements need to be fulfilled in order go through the Acceleration Gate if they attempt to use it while it is still locked.