How to Manage Late Purchase Orders

Your supplier's usual lead time is twelve days. It's day fifteen, nothing's arrived, and Shopify's purchase order screen shows exactly what it showed on day one: Ordered. No badge, no warning, no "this is now three days late" anywhere in the admin, because Shopify doesn't track an expected date on a purchase order at all, so it has nothing to compare today's date against.

Recognizing a late PO

Since neither the purchase order nor its linked inventory transfer has a native expected-arrival field, recognizing "late" is entirely on you: compare the date you marked the PO Ordered against your supplier's usual lead time, and treat anything that's run past it as worth a check-in. That means the number you're comparing against isn't a Shopify field at all — it's whatever lead time you've established from past orders with that specific supplier, ideally tracked somewhere yourself, whether that's a spreadsheet note or a dedicated app that keeps the number for you.

First steps once you notice

1. Contact the supplier before assuming the worst. A short email or call gets you an actual ship date, which is more useful than guessing.
2. Get a firm new date, not a vague one. "Soon" isn't a date you can plan a reorder around; a specific day is.
3. Check what's actually at risk. Look at how many days of stock you have left against the new expected date — if the gap is small, you may be fine; if it isn't, act now, not once you've already stocked out.
4. Decide whether to expedite, wait, or source elsewhere for this specific shortfall, based on how much runway you actually have.

Updating your lead time assumption

A single late order doesn't always mean your lead time assumption was wrong; suppliers have bad weeks. But if a supplier runs long more than once, the fix isn't to keep hoping the old number holds — it's to update the lead time you use for that supplier's reorder points, so future orders go out early enough to absorb the real delay. Building that number properly, including what to do with a genuinely unreliable supplier, is covered in supplier lead times and inventory forecasting.

A late order that eventually arrives short is also worth checking against how to handle a partial receipt — the two problems often show up together on the same troubled order.

When to split-source

One late order is a supplier having a bad week. A pattern of late orders from the same supplier is a signal to stop treating every reorder as a single point of failure. Splitting a SKU across two suppliers costs you something, usually a slightly higher unit price from the second, smaller source, but it buys you a real hedge against the exact scenario you just lived through. The judgment call is whether that cost is smaller than the cost of the stockouts you keep absorbing from one unreliable source; there's no fixed threshold, it depends on the margin on the SKU and how often "late" has actually been happening.

Keeping track of which supplier is actually reliable, across every open order, is tedious to do by hand once you're past a handful of SKUs. It's exactly the kind of pattern StockCue is built to surface automatically, rather than something you notice only after the third late shipment in a row.

Frequently Asked Questions

What should you do when a purchase order is late?

Contact the supplier for a firm new date, check how many days of stock you actually have left against that new date, and decide whether to expedite, wait, or cover the gap another way based on how tight that runway is.

Should a late PO change your reorder point going forward?

If it's a one-off, not necessarily. If a supplier runs late repeatedly, update the lead time you use for that supplier's reorder point calculation so future orders go out early enough to absorb the real delay instead of the optimistic one.

When does a late order justify splitting future orders across two suppliers?

When lateness is a pattern rather than a one-time event, and the cost of the stockouts it's causing outweighs the usually-higher unit price of a smaller second source. There's no fixed rule — it comes down to the SKU's margin and how often the delays are actually happening.