Process parameter dependency: The escalation value can be greater than the positive tolerance limit defined for that schedule, if the process parameter “Allow Escalation beyond the Positive tolerance limit?” under the entity type “Maintenance Planning” and the entity “Aircraft Maint. Planning” in the Define Process Entities activity is set as 1 / ‘Yes’.  However, if this process parameter is set as 0/ ‘No’, the system does not allow the users to specify an escalation value greater than the preset positive tolerance limit.