Shopify 3PL and warehouse (WMS) integration
Stop emailing orders to the warehouse and reconciling stock by hand. We connect Shopify to your 3PL or WMS so orders, inventory, fulfilment and returns stay in sync automatically, and every message is watched for failures.
The manual work a disconnected warehouse creates
Without a clean integration, your store and your 3PL hold two versions of the truth, and your team spends the day reconciling them.
Orders sent by hand
Staff export a CSV or email each order to the warehouse before it can be picked.
Overselling
Stock drifts between Shopify and the warehouse, so you sell what isn't on the shelf.
Tracking stuck in the 3PL
Tracking numbers sit in the warehouse system while customers ask where their order is.
Returns in spreadsheets
RMAs and restocks are tracked off-platform, so inventory never quite matches reality.
Split shipments unseen
Multi-warehouse and partial dispatches aren't reflected back in Shopify.
Batch delays
Orders wait for the next manual upload instead of dropping to the floor on payment.
No failure visibility
A sync breaks and nobody knows until a customer complains.
Peak-season strain
Volume that's fine in July buckles under a Black Friday spike.
What syncs, and which way
A typical data-flow map. Direction and system of record are confirmed per object in discovery.
| Data object | Direction | Trigger / frequency | System of record |
|---|---|---|---|
| Orders | Shopify to 3PL | On order paid (webhook) | Shopify |
| Inventory | 3PL to Shopify | On stock change + hourly | 3PL / WMS |
| Fulfilment & tracking | 3PL to Shopify | On dispatch (webhook) | 3PL / WMS |
| Returns / RMAs | Two-way | On RMA create / restock | Agreed per workflow |
| Products & SKUs | Shopify to 3PL (or PIM to both) | On create / update | Shopify or PIM |
| Inbound stock (PO/ASN) | 3PL to Shopify (optional) | On goods receipt | 3PL / WMS |
How a Shopify 3PL integration works
The exact data objects we sync, how the sync behaves, and how we keep it trustworthy. Every object is scoped to your 3PL or WMS during discovery.
What syncs
- Orders, line items, quantities and ship method
- Shipping and billing addresses
- Gift notes and packing instructions
- Inventory and stock-on-hand, per location
- Fulfilments, tracking number and carrier
- Fulfilment status and shipment events
- Returns and RMAs
- Products and SKUs
- Inbound stock, POs and ASNs
How it works
- Orders push Shopify to 3PL in real time via webhook
- Inventory syncs 3PL to Shopify; the WMS is system of record for stock
- Tracking and status flow 3PL to Shopify, then to the customer
- One-way or two-way per object, agreed with you
- Near-real-time by default, scheduled batch where it suits
- Multi-location and split-shipment aware
- Nightly reconciliation catches any drift
Reliability
- Structured logging on every message
- Retries with backoff on transient failures
- Idempotency keys so an order never ships twice
- Dead-letter queue for records that need review
- Monitoring and alerting on failed jobs
- Reconciliation reports you can actually read
- Safe re-processing, nothing is silently lost
How we deliver it
A logistics integration is unforgiving, a wrong address or a double-ship costs real money. So we specify it before we build it.
Discovery
We map every order, return and stock movement, and agree the system of record for each object.
Data-flow design
We define what moves where, in which direction, and how often.
Build
We build against your 3PL's sandbox and a Shopify dev store, with logging in from day one.
UAT
You run real orders, returns and edge cases against agreed acceptance criteria.
Deploy
Controlled cutover with a reconciliation pass and rollback ready.
Monitor & support
Alerting, error handling and change requests as volumes grow and APIs change.
Built to be owned and trusted
Your logistics data is sensitive and the integration is business-critical. We treat both that way.
- Least-privilege, scoped API access on both sides
- Signed webhooks and encrypted credentials
- Separate sandbox and staging environments
- Handling aligned with the Australian Privacy Principles
- Source code, documentation and repo access handed over
- No vendor lock-in, the integration is yours
Shopify 3PL integration FAQs
Related services
Scope a Shopify 3PL integration
Bring your 3PL or WMS, your order volume and your peak. We'll map what syncs, which way, and what it takes to build and monitor it.
Scope a Shopify 3PL integration
