Supplier short shipment: the claim conversation, word for word

Short answer: a short shipment is a paperwork claim, not an argument — and you win it with a counted receipt, your PO, and one annotated email sent within the claim window. Ship the evidence before the opinion. Here's how to document the shortage, the exact email to send (annotated), what a debit memo is for, and the reorder decision most merchants get backwards.

The incident we're dissecting

A kitchen-knife retailer ordered 300 units of a Santoku across two SKUs on PO INV-2027-118 — 180 x 7-inch, 120 x 5-inch — from a supplier we'll call Harlow Cutlery. The invoice said 300. The cartons held 272: 180 of the 7-inch, and 92 of the 5-inch. Twenty-eight units missing, about $320 at wholesale cost, and the retailer's next reorder point for the 5-inch was three weeks out.

Three things determined whether that $320 came back:

1. The receipt was counted against the PO, not against the invoice. The receiving team checked carton contents line by line — the discipline in the receiving checklist — and recorded 92, not "looks fine."
2. The evidence was captured the same day. Carton photos, the packing list inside each carton, box weights on the shipping documents.
3. The claim went in fast. Most suppliers enforce a shortage claim window — commonly 7–14 days from receipt, sometimes 30; check your own terms, since every supplier agreement differs. The email went out the next morning.

First, prove it's really a shortage

Before any email, close your own loop, because "short" has three distinct causes with three different fixes. (Shopify's receiving and PO docs treat the receipt-against-PO step the same way — see the Help Center's purchase orders section, accessed October 2026 — but the discipline lives in your dock process, not the software):

• Supplier shipped short — the cartons genuinely contain fewer units than the invoice claims. Your evidence: counted contents, photos, packing list.
• Units are in the shipment but never made it to your count — receiving error, units put away before counting, a case counted as a single (the classic unit-of-measure miss). Recount before you claim; a false claim costs credibility you'll want later.
• The PO was received wrong in your system — the goods are all there, but your Shopify receipt for the PO was fat-fingered. Fix the receipt, not the relationship: correct the quantity with the reason attached (adjustments with reasons become your audit trail — Shopify keeps an adjustment history per variant; Shopify Help Center, adjustment history, accessed October 2026). If the shortage only appears as a variance between your PO, your receipt, and your count, work the three-way match before you write to anyone.

And keep the claim scoped to the shipment. If you also found two damaged units or a color break, log those separately — the count-variance investigation is a different workflow, covered in the inventory discrepancy guide. Bundling everything into one angry email weakens the one claim you can prove cleanly.

The claim email, annotated

Here's the email that went to Harlow Cutlery, with annotations on why each line earns its place. Send it to your regular contact and their accounts/exports person if one exists.

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Subject: Shortage on PO INV-2027-118 — 28 units, documentation attached

Why this subject: PO number first, specific count, "documentation attached." A subject that says "Problem with order!!" gets triaged slower on every procurement team on earth.

Hi Mei,

Receiving of PO INV-2027-118 (delivered October 14, tracking [redacted]) found a shortage against the invoice:

Why the table: it makes the claim checkable in ten seconds and gives accounts payable a form they can process without translating prose into a credit request.

Both cartons for KNT-STK-5 were intact on arrival — no re-taping, no damage, weight matched the courier's manifest. Photos of the cartons, the packing lists, and the counted contents are attached. Our receiving log records the count at 10:40 a.m. on delivery day, before put-away.

Why this paragraph: it closes the supplier's two standard counters — "damaged in transit" (cartons intact, documented) and "how do we know you counted right" (counted same-day, before shelving, with a timestamped log).

Per our agreement, we're within the shortage claim window. We'd like to resolve this as either:

1. Ship 28 units of KNT-STK-5 against PO INV-2027-118, or
2. Issue a credit for 28 units at the PO price of $11.40/unit — $319.20 total.

Why two options: it lets the supplier pick the cheaper remedy, which speeds resolution, and it states the math so no one has to recompute it. One claim, two remedies, zero emotion.

We've been ordering monthly since March and would like to keep it that way — happy to hop on a call if it's easier to sort by voice.

Best, [Name], [Store]

Why the last line: it separates the claim from the relationship without threatening anything. The relationship ledger matters — but it's evidence for tone, not a bargaining chip to lead with.

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What happens next — and the debit memo

Most suppliers respond within a few business days with one of: full remedy, a partial offer, a "we shipped in full" denial, or silence. The path for each:

• Credit or reshipment offered: accept, and track the remedy like a mini-PO. If they reship, the replacement gets its own PO reference so the receipt reconciles. If they credit, confirm the credit appears on the next invoice — a promised credit that never posts is the most common quiet loss in supplier relationships. The habit of keeping that entire exchange in one written thread per PO (claim, remedy, confirmation) is covered in the PO correspondence guide.
• Denied but you have clean evidence: escalate once, to a founder or manager, with the same attachments. If your terms include dispute mechanics, follow them in writing. At this scale the commercial decision — pursue harder vs. absorb and renegotiate — is a judgment call, and it should weigh your future volume with this supplier.
• The debit memo route: some businesses issue a formal debit memo — a document debiting the supplier's account for the shortage, which their AP then offsets against what you owe. This matters most when you buy on terms: rather than waiting for a credit, you deduct the $319.20 from your next payment and send the debit memo as the paper trail. Only do this when the claim is documented and your terms allow it — a unilateral deduction on a weak claim damages trust faster than the shortage did.

Whatever the outcome, it goes on the supplier's record. A shortage is a data point in your supplier scorecard — one is an incident, three is a pattern, and the scorecard is what turns "Harlow keeps coming up short" from a feeling into a renegotiation case. (For US buyers weighing a formal deduction against an unresolved claim, the FTC's business guidance on billing and credit disputes is the right generic starting reference — accessed October 2026; this is process framing, not legal advice.)

The reorder decision — the part merchants get backwards

The instinct after a shortage: pause the reorder until the claim resolves. Usually backwards. Separate the two questions:

• Do you need the stock? Your coverage math doesn't care whose fault the shortage was. If the 5-inch Santoku's days of cover are shrinking and your supplier's lead time is 5–6 weeks, waiting on a 28-unit claim to resolve before reordering means solving a $319 dispute by risking a four-week gap on a moving SKU. Reorder on the need; pursue the claim on the paperwork — in parallel.
• Does the shortage change how much you trust the supply? This is the real reorder input. A one-off shortage on a clean history: order normally, maybe pad the order by the shortage amount. A pattern: increase safety buffer while you qualify a second source, and let the scorecard case build.

One more practical note: if the shortage SKU was headed for a promo or a launch window, that changes the calculus — the cost of the gap isn't just lost sales on one SKU, it's the marketing spend pointed at a page with nothing to sell. A claim worth $319 in units can be worth far more in that context, which is exactly when the reshipment option (with a promised date) beats the credit.

Common questions

What is a short shipment? A short shipment (or shortage) is a delivery that contains fewer units than the invoice or PO states — or occasionally the wrong SKUs entirely. It's distinct from damage (goods arrived but unsellable) and from receiving errors (goods arrived but were miscounted on your side). Proving which of the three you have is the first step before any claim.

How do I write a shortage claim email to a supplier? Lead with the PO number and the specific shortage in a small table (invoiced vs. received per SKU), attach photos of the cartons and packing lists, state that the count was done same-day before put-away, reference your claim window, and offer two remedies — reshipment or credit at the PO price with the math shown. Send it within the claim window; 7–14 days is common, but your supplier's terms govern.

What is a debit memo? A debit memo is a document debiting the supplier's account for the shortage amount, which offsets against what you owe them — useful when you buy on payment terms and don't want to wait for a credit to process. Issue one only when the claim is well documented and your agreement permits deductions; otherwise it reads as unilateral and damages the relationship.

Should I reorder stock after a short shipment, or wait for the claim? Reorder based on your coverage need, and pursue the claim in parallel — they're separate questions. If the SKU's days of cover are falling against a multi-week supplier lead time, waiting on a small-dollar claim to resolve can cost you a much larger gap. A repeated shortage pattern, though, should feed your supplier scorecard and your safety-buffer decisions.

What evidence do I need for a shortage claim? A counted receipt done against the PO (not just the invoice), photos of the intact cartons and internal packing lists, the courier manifest with weights, and a timestamped receiving log. Evidence captured on delivery day, before put-away, closes off the two standard counters: transit damage and counting disputes.

Where to go next

Today: check your last five receipts. Did any get counted against the PO, line by line, before put-away? If not, fix the receiving loop first — the receiving checklist is the whole SOP — because every future claim depends on evidence you can only capture at the dock. Then put shortage incidents on your supplier scorecard so the second occurrence starts building a case instead of starting an argument.