A permanent reservation of specific inventory items for designated orders that cannot be overridden or reassigned until the allocation is fulfilled or manually released. Unlike soft allocations, which can be adjusted based on changing priorities, hard allocations create an inflexible commitment that locks inventory to specific customer demands.

This allocation method is critical for maintaining order integrity and preventing overselling in high-volume warehouses. Hard allocations ensure that once inventory is committed to a customer order, it remains available for that order regardless of subsequent demand or system changes. This prevents the frustration of promising inventory to multiple customers and provides reliable delivery commitments.

For example, when a premium customer places a rush order for 500 units of a specific SKU, warehouse managers can hard allocate that exact inventory to guarantee fulfillment, even if other orders arrive later with higher profit margins or different priorities.

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