Serials, lots & scrap

The Stock units table on the part detail page is the unit-level truth: one row per physical unit (or lot/quantity pool), with its bin, condition, identity, cost, and status.

Screen: The Stock units table on the part detail page — columns Location, Cond (a colored condition pill), Serial / Lot, Qty, Unit $, Status, and a red Scrap button on rows that are currently on hand.

Stock unit statuses

The Status column tracks where each unit sits in its life:

Status	What it means	Still counted in on-hand?
`ON HAND`	On the shelf, available to reserve, issue, or ship.	Yes
`ALLOCATED`	Reserved for a work order. In practice you won’t see this value: APEX records a reservation as a hold against an `ON HAND` unit (visible in Free to sell) without changing the unit’s status.	—
`IN WORK`	At the shop floor inside a work order.	No
`INSTALLED`	Installed into a higher assembly.	No
`IN TRANSIT`	Moving between sites.	No
`SHIPPED`	Left the building on a shipment.	No
`SCRAPPED`	Condemned via the Scrap action.	No
`CONSUMED`	Used up by a work order.	No

On-hand quantity and on-hand value on the part header are recomputed from ON HAND units every time a receive, adjustment, issue, ship, or scrap is booked — the figures are never stale.

Serialized stock

For a part tracked by SERIAL:

Each stock unit is one physical piece with a unique serial number — quantity 1.
A serial number can exist only once per part number; APEX rejects a duplicate.
Receive each serial as its own line: fill the Serial (opt) field on the receive form and leave Qty at 1.
The serial shows in the Serial / Lot column and follows the unit through issue, installation, and shipment — that continuity is the back-to-birth trace.

Lot-tracked stock

For a part tracked by LOT, units are grouped by batch: the lot number appears in the Serial / Lot column and one stock-unit row can carry a quantity greater than 1 (the whole batch received together).

Lot numbers currently arrive with imported data or system integrations — the console’s receive forms capture a serial but do not yet offer a lot-number field. Received lot-tracked stock still books correctly by quantity; it just won’t carry a lot identity until that field ships.

Scrapping a unit

Scrap is how a condemned unit leaves stock while keeping its history.

Open the part detail page and find the unit in the Stock units table. Only a unit in ON HAND status shows the Scrap button.
Click Scrap.
The unit flips to SCRAPPED status and SCRAP condition, its full quantity is written out of stock as a negative SCRAP entry in the movement ledger, and the part’s on-hand quantity and value recompute immediately. The toast confirms which unit was scrapped.

Scrap has no confirmation prompt and no undo in the console — the click is the action. The row stays visible in the table (status SCRAPPED) and the ledger entry is permanent. If a unit was scrapped in error, re-receive it as new stock and note why.

Tip: teardown harvesting is different from scrap — parts recovered from a teardown enter stock through the work order, not through the inventory Scrap/receive actions. See the Work Orders guide.