One Purchase Order Released as Several Partial Air Shipments
Where one order flies in tranches, each consignment needs its own invoice and value; how to split the documents so a North American entry still reconciles.
Representative scenario, not a specific client engagement. This page describes how a shipment of this kind is genuinely handled — the constraints, the approach, and where it commonly goes wrong. It does not name or describe a real Transeasy customer. Our two documented project moves are the Mexico container move and the India overweight cargo delivery.
The situation
Electronics orders are routinely released in tranches. Part of the line finishes early, a component shortage holds the balance, or the buyer wants the first pallet flown and the rest to follow. The difficulty begins when the commercial paperwork does not split with the goods. A single invoice covering the whole order, presented twice, describes goods that are not in the shipment on either occasion, and a customs authority treats both entries as unsupported by the documents filed.
On a North American entry the mismatch surfaces immediately. Declared quantity will not reconcile against the packing list, invoice value exceeds what physically arrived, and an origin or preference claim drafted for the full order no longer describes the consignment it is attached to. The usual results are a request for information, release delayed while the freight sits in a bonded facility, and a corrected entry once amended documents appear. The premium paid for air freight is spent at the counter.
What made it difficult
- Each entry must be supported by documents describing only the goods actually presented, so one invoice cannot serve two arrivals.
- Tooling, moulds and development charges allocated once across a whole order will misstate value as soon as that order is split.
- Entry type and de minimis thresholds apply per consignment, so splitting can change which procedure and which documents are required.
- Origin statements and preference claims are consignment-level declarations and have to be reissued for each tranche.
How it is approached
The clean structure is one commercial invoice per consignment, each referencing the purchase order and stating the shipment as a numbered part of an agreed total. Line items show only what is in the boxes. Unit prices stay constant across the tranches, and one-off charges such as tooling or development costs are either invoiced separately or apportioned pro rata by quantity, with the method written on the face of the invoice. Consistency between tranches matters more than which method is chosen.
The packing list and the air waybill then have to agree with that invoice line for line, including carton count, net and gross weights and shipping marks. Where the factory releases against internal batch numbers, those numbers belong on all three documents so that an officer can reconcile the consignment without writing to anyone. Serial ranges are worth listing for high-value assemblies. If a tranche ships short against its own invoice, the invoice is corrected before departure rather than explained on arrival.
Duty is assessed per entry, so splitting changes the arithmetic rather than the rate. Freight and insurance are allocated to each consignment on whatever valuation basis the destination applies, and the Incoterm should stay the same across the tranches so the transaction value is built consistently. Where the buyer pays air freight on the first release and sea freight on the balance, that difference belongs in the declaration for each shipment instead of being averaged across the order.
Operationally, a forwarder should treat the order as a controlled release rather than a series of unrelated bookings. That means a booking plan held against the order, a document set prepared and checked per tranche before the goods leave, and one reference that ties the tranches together for the importer and their broker. Where preference is claimed, the origin declaration is reissued for each consignment covering only the goods and values actually in it.
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Takeaways
- A part shipment needs its own invoice describing only what is in the boxes, not a second copy of the full order invoice.
- One-off charges must be either invoiced separately or apportioned by a stated method applied identically to every tranche.
- Entry type, thresholds and duty are assessed per consignment, so splitting changes the paperwork as well as the timing.
- Origin and preference declarations describe a consignment rather than an order, and have to be reissued each time.
Frequently asked
No. Each entry has to be supported by documents describing the goods actually presented. A full-order invoice used twice overstates quantity and value on both occasions, which is a misdeclaration even where the intent is innocent. The correct approach is a separate invoice per consignment, each referencing the purchase order, stating which part of the total it covers, and matching the packing list and air waybill line for line.
There are two defensible routes. Invoice them once as a separate document and declare them on the consignment they belong to, or apportion them pro rata across the tranches by quantity and state that method on each invoice. What draws queries is charging the full amount on the first tranche with no explanation, or dropping the charge from later invoices so that the unit price appears to move between shipments.
The rate does not change, but the basis can. Duty is calculated per entry, so freight and insurance are allocated to each consignment rather than spread across the original order, and an urgent air tranche carries more freight per unit than the sea balance wherever the destination values on a delivered basis. Entry type can also change, since informal entry and de minimis limits apply per consignment.