MRO Inventory and Purchasing: Maintenance Strategy Series, Volume 2

A soft allocation is an aggregate quantity of demand against a specific item in a specific facility. I have heard standard allocations referred to as normal allocations, soft allocations, soft commitments, regular allocations. Standard allocations do not specify that specific units will go to specific orders.
A hard allocation is an allocation against specific equipment or assets within a facility, such as an allocation against a specific location, lot, or serial number. Firm allocations are also referred to as specific allocations, frozen allocations, hard allocations, hard commitments,...