Allocated Stock

Allocated stock refers to inventory that has been reserved for a specific customer order, sales channel, or downstream demand — but has not yet been physically shipped or picked. It is committed inventory: technically still on the shelf, but no longer available for general sale.

How Allocation Works

When an order is placed, an inventory management or warehouse management system (WMS) performs a soft allocation: it flags a specific quantity of a SKU as reserved against that order. The physical goods haven't moved, but the system treats them as unavailable for any other order.

This matters in multi-channel operations. If you have 100 units in stock and 80 are allocated to pending orders, your available-to-promise (ATP) quantity is only 20 — even though the physical count shows 100.

Allocation can happen at several levels:

• Order-level allocation: A specific order number is linked to specific inventory
• Channel allocation: Inventory pools are reserved per sales channel (e.g., 500 units for Amazon, 300 for DTC website)
• Lot/batch allocation: Specific production lots are reserved for customers with traceability requirements (food, pharma)

Why Allocated Stock Matters

Mismanaging allocated stock leads to overselling — accepting orders for goods you can't actually fulfill. This is a common problem in high-velocity e-commerce, particularly during flash sales or promotional events when demand spikes faster than inventory systems can respond.

Proper allocation visibility allows:

• Accurate ATP (Available-to-Promise): Customer service reps and online checkout flows show only genuinely available inventory
• Prioritized fulfillment: High-priority orders or customers can be protected with reserved stock
• Reduced safety stock: When allocation is reliable, safety stock buffers can be trimmed

Allocated Stock vs. On-Hand vs. Available

Understanding the relationship between these three quantities is essential:

• On-hand stock: Physical inventory present in the warehouse
• Allocated stock: Portion of on-hand reserved for specific orders
• Available stock = On-hand − Allocated − Safety stock held in reserve

Some systems also distinguish inbound allocated stock — units on purchase orders that have already been pre-allocated to customer demand before they arrive.