Your Integration Isn't Working Just Because Orders Moved
Orders showing up in your ERP is the easiest test there is. Here are the seven quiet ways commerce integrations fail, and a 10-minute check to find them.
By Charlie Alsmiller, Founder & CEO, APIWORX · Last updated October 19, 2026
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Every week somebody tells me their integration is "working."
Orders show up in the ERP. Nobody is yelling. Great.
Then I ask three questions. Did the inventory that went back out to Amazon match? Did every shipment come back with tracking? Does last month's settlement tie to the bank deposit?
Long pause.
"Orders moved" is the easiest test there is
Order creation is the happy path. Every connector demo shows it. It's the one thing almost every integration gets right, which is exactly why it tells you so little.
The expensive failures happen everywhere else, and most of them are quiet. Nothing errors. Nothing turns red. The numbers are just wrong, and you find out from a customer, a marketplace, or your controller at month-end.
The seven quiet ways commerce integrations fail
1. Inventory drifts. The order posts fine, but the available-to-sell number pushed back to Shopify or Amazon is stale or wrong. You find out when you oversell, or when a listing gets suppressed.
2. Shipments don't come back. The order went to the 3PL. The confirmation and tracking number never made it back to the storefront or the ERP. The customer emails "where's my order," and the marketplace counts it against you.
3. Tax, discounts and shipping post wrong. The order total looks right. The line-level split doesn't. Finance fixes it by hand every month and calls it "close."
4. Refunds go nowhere. Orders flow one direction beautifully. Money going the other direction gets entered by hand, or not at all.
5. Duplicates and partials. A retry creates a second order. Or half the lines post and the rest sit in a queue nobody checks.
6. Settlements don't tie. Amazon pays you net of fees, refunds and reserves. If your integration only knows about orders, your books never match the bank, and someone builds a spreadsheet to explain the difference.
7. The flow quietly turns itself off. This is the one that bites hardest, so it gets its own section.
The quietest failure: a flow that stops running
Here's a real one from our own run data this summer.
A shipment-sync flow started failing against an ERP's API. First timeouts, then a string of gateway errors one morning. After enough failures in a row, the integration platform did what platforms are designed to do: it disabled the flow.
Think about what happens next. No more failed runs. No more errors. The dashboard goes quiet.
Quiet looks exactly like healthy.
That error landed in our team's inbox the same morning, because somebody's job is to look. Without that, the first signal would have been customers asking where their packages were.
And here's the part most people don't expect: when we look across our run data, the most common failures aren't in the integration code. They come from the systems on either end. A 3PL's API returning an unhandled error. An ERP timing out under load. You don't control those systems. You only control whether someone notices.
The real question: who's watching?
Every iPaaS will sell you alerts. Alerts are fine. But an alert is just an email to somebody on your team, at 2 a.m., about a system they didn't build.
So the question isn't whether your integration works. It's who notices when it doesn't, and who fixes it before your customers do.
That's why we built APIWORX with the operations team included. We build the connectors, we watch the flows, and we fix the exceptions. You still get the platform. You just don't have to babysit it.
A 10-minute check you can run this week
Don't take my word for it. Run this:
- Trace 20 recent orders end to end. Order, inventory decrement, shipment and tracking, invoice, payment, settlement. Every step, not just the first one.
- Compare available-to-sell for your top 10 SKUs on each channel against the ERP.
- Count orders shipped versus tracking numbers posted back to each storefront and marketplace.
- Pull last month's refunds and confirm each one hit the ERP.
- Tie one marketplace settlement to the actual bank deposit.
- Look for flows that are paused or disabled. A disabled flow doesn't send errors.
- Ask who gets the alert at 2 a.m., and what they're supposed to do with it.
If three or more of those come back with "uh," you have a problem that your order count is hiding.
Orders moving is the start of the job, not proof that it's done.
If you'd rather have a second set of eyes on it, book a free assessment and we'll walk your flows with you. Or grab the 2026 Enterprise Integration Playbook and run it yourself.
So, which of the seven would your integration fail first?
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