The standard timeline.
Weeks 1–2: Contract signed. SOW finalised. Integration scope agreed. Project plan with named owners on both sides.
Weeks 2–6: System integrations built — cart (Shopify/BigCommerce/etc), OMS, shipping/carrier, returns. EDI if retail trading. Test orders processed end-to-end.
Weeks 4–8: First inventory transfer. Cycle count at receipt. SKU master setup, location assignment, label generation tested.
Weeks 6–10: Soft launch — small order volume, close monitoring, daily reconciliation. Issues caught early before they scale.
Weeks 10+: Full operations. Weekly performance review for first 90 days, then monthly.
The integrations that matter.
Cart → OMS → 3PL → Carrier: orders flow end-to-end automatically, tracking flows back to customer. No manual file-passing.
Inventory sync: 3PL's WMS and your cart/OMS see the same inventory in real time (or near real-time, max 15 minute lag).
Returns: customer initiates return → 3PL processes → inventory updated → refund triggered. Don't leave any of these manual.
EDI if applicable: trading partner setup, mapping, UAT all done before first PO arrives.
The data work.
Clean SKU master before inventory ships. Wrong dimensions, weights, or descriptions bake errors into months of operations.
Clear inbound packaging spec — case quantities, palletisation, labelling — communicated to the manufacturer in writing.
Carrier rate cards loaded into both your OMS and the 3PL's WMS so they see the same shipping economics.
The communication cadence.
Weekly during onboarding: standing 30-minute call between you (ops lead) and 3PL account manager. Issues, fixes, plans for next week.
Daily during soft launch: dispatched-orders report, exception list, returns count. Small frictions visible before they compound.
Monthly after stability: performance review against SLA, cost vs forecast, upcoming changes (peak season, new SKUs, new channels).
What to measure from day 1.
Pick accuracy (orders shipped without re-pick) — target 99.5%+
On-time dispatch (orders dispatched within agreed cutoff) — target 99%+
Inbound accuracy (received qty matches PO) — target 99.5%+
Returns processing time (intake to credit/restock) — target 48 hours
Invoice accuracy (vs your reconciled monthly cost) — target 99%+
Common onboarding mistakes.
Trying to launch in peak season. Onboard in Feb/March or July/August, not October.
Skipping soft launch. Going straight to full volume creates stress no one's ready for.
Not documenting standards. 'How we want orders packed' should be written, not verbal.
Underestimating data quality. Garbage in, garbage shipped — clean SKU master before go-live.
Onboarding starts with the right match.
We'll match you with vetted AU 3PLs that fit your scale and complexity — and walk through the onboarding plan with you.
Get matched →Frequently asked
- How long does 3PL onboarding take?
- 8–12 weeks for parcel ecommerce. 12–16 weeks if you're trading retail (Coles/Woolies/etc) and need EDI. Faster is possible but riskier.
- What's the most common onboarding failure?
- Going to full volume too quickly. Soft launch with a fraction of orders for 2–4 weeks catches the issues before they hit your customer base.
- Should I have someone dedicated internally?
- Yes — at least 50% of someone's time for the first 60 days. Onboarding without an internal owner consistently underperforms.
Cite this page as: 3PL Compare. (2026). How to onboard with a 3PL — the AU playbook (2026). Retrieved from https://3plcompare.com.au/how-to-onboard-with-3pl