This flag specifies whether the mission is "to block". The initialization of this flag is carried out either manually by a resource wishing to block the mission, or automatically further to the blocking rejection of a task on this mission.
in the case where the mission is under progress, the mission will not be blocked immediately but only after the mission has become available again. In fact, in the case where a task is rejected by a resource, by means of a blocking reason, while another task is also under progress on the same mission, the mission "in progress" cannot switch immediately to "blocked". Consequently, it remains set to "In progress" but the flag indicates that it should be switched to "Blocked" once the tasks "in progress" are completed. Moreover, this mission "to block" will no longer be submitted to the resources.
