Reserved inventory explained

How Fiddle holds stock for orders so you never promise the same unit twice.

Updated June 21, 20261 min read

Reserved stock is on-hand inventory that’s already committed to an order. It still sits in your warehouse, but it’s spoken for — so Fiddle removes it from what you can sell next.

What creates a reservation

Reservations happen automatically when stock is committed elsewhere:

  • A confirmed sales order reserves the finished goods it needs.
  • A scheduled work order reserves the components from its bill of materials.
  • A pending transfer holds stock at the source until it ships.

Reserved vs. available

The key formula is simple:

Available = On hand − Reserved

If you hold 100 units and 30 are reserved for confirmed orders, your available is 70. Fiddle uses available — not on hand — to prevent overselling and to drive reorder suggestions.

Quantity Can you sell it?
On hand Not all of it — some may be reserved
Reserved No — it’s committed to an order
Available Yes — this is your free-to-promise stock

Stock you can’t sell but can’t explain? Open the Reserved screen under Inventory to see exactly which orders are holding each unit.

When reservations release

A reservation clears when the order that created it is fulfilled, cancelled, or unscheduled. Shipping a sales order, for example, converts reserved stock into an outbound shipment and drops both on-hand and reserved.

Next steps

For the full picture of how reserved fits with incoming and available, read understanding stock levels.

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