necessitylevel

2. A rank that shows how essential an item is in a plan or system.

The team set a high necessity level for clean water in the emergency kit.

3. The degree to which something must be done or cannot be avoided.

The necessity level of fixing the roof rose after the storm.

4. A measure used to decide which things are most important to keep.

Each supply was given a necessity level so the most needed ones were packed first.