Stock movements

Beyond inbound and outbound, stock moves for lots of reasons. Every one is a recorded movement in the ledger.

Movement types

• Bin-to-bin transfer — within a warehouse, move stock from one bin to another. Usually slotting optimisation or damage isolation.
• Warehouse transfer — between warehouses. Modelled as outbound at source + inbound at destination; stock shows in-transit between posts.
• Adjustment — write stock up or down, outside of a count. Requires role + reason. Goes to the variance account.
• Kit / assembly — combine component SKUs into a kit SKU (e.g. bundle + promotional pack). Components deduct; kit adds.
• De-kit / disassembly — reverse.
• Quarantine ↔ general — move stock in or out of quarantine. In-to-general requires QA release.
• Ownership change — 3PL: transfer stock from one customer's ownership to another's (rare; e.g. invoice dispute resolution).

Every movement has

• Source, destination (bin, warehouse, or owner).
• SKU, lot/serial if tracked, quantity.
• User, timestamp, reason.
• Reference (order number, GRN, count id, adjustment id).

Ledger

The ledger is an append-only log. Current stock at any bin = sum of inbound movements − outbound movements. Reports reconstruct historical stock for any date.

Reversals

Movements are not edited. To correct, post a reversing movement with reference to the original. Audit-traceable.

In-transit stock

Between warehouses, in-transit stock is visible:

• Not picked from the source (source count excludes).
• Not received at destination (destination count excludes).
• Shown in a separate "in-transit" bucket in reports.

If a transfer is lost in transit, post a variance against the in-transit bucket.

Reporting

Key views on /app/warehouse/movements:

• Ledger explorer — filter by SKU, bin, customer, date.
• Adjustment report — for internal audit.
• Transfer report — warehouse-to-warehouse movement summary.

Integration

Movements flow to finance via the inventory subledger:

• Transfers — no P&L impact, only location.
• Adjustments — hit shrinkage.
• Kit / de-kit — no net stock value change if components' cost = kit's cost.