Warehouse review and field map
Your pick, receive, and return flows mapped to fields, timing, and a sync method before any build.
The Problem
Your Store Keeps Selling Stock Your Warehouse Already Picked
It shows up when the floor moves faster than the sync: picks, receipts, and returns happen in the building, and Shopify hears about them hours later.
01 · Overnight sync
The store kept selling stock the floor sold out of by lunch.
Shopify only sells stock nobody has allocated or held.
02 · Cancellations
Support spends the afternoon emailing about cancellations.
Paid orders reach the warehouse as pick requests automatically.
03 · Late receipts
This morning's container isn't sellable online until tomorrow.
Receipts update sellable stock as soon as the warehouse records them.
04 · Forgotten returns
Returns sit on a shelf nobody told Shopify about.
Returns post back to Shopify, so restocked units sell again.
Your flash sale sold out on the warehouse floor by lunch, but the store kept taking orders all afternoon, because stock only syncs overnight. Now your support team is emailing customers about cancellations and refunds. This morning's container isn't sellable online until tomorrow's file runs, and returns sit on a shelf nobody told Shopify about. Your pickers aren't slow. The data is.
We start with how your warehouse actually works: pick waves, receipts, returns, and which system owns each count. Then we connect the WMS to Shopify, and your ERP when you run one, by API, EDI, or files. Paid orders release to the floor automatically, and Shopify only sells stock nobody has allocated. Your team stops apologizing for stock the store didn't have.
Sellable stock, not shelf stock
Shopify gets on-hand stock minus allocated and held units, so picked items stay off sale.
Orders released as they're paid
Paid orders reach the WMS as pick requests, and shipments post back with tracking.
Legacy systems welcome
On-prem or older warehouse software connects through EDI, SFTP files, or a small local agent.
Our WMS Sync Process
From Free Warehouse Review to a Synced Floor in Five Steps
Your warehouse lead approves the stock rules and field map, then signs off on real test orders picked and shipped on your own floor.
We walk your pick, pack, receive, and return flows with your warehouse lead and read the WMS's API or file specs. You get a plain plan for what syncs, how often, and through which method.
What's Included
What You Get With a WMS Integration With ERP and Shopify
Order release, shipment and tracking updates, sellable stock feeds, receipts and returns, an ERP link when you need one, and alerts when a feed stalls.
Compare Options
DeveloperLook vs a WMS Vendor Connector vs Nightly File Exports
Many WMS vendors ship a Shopify connector, and a nightly export costs almost nothing. Here's where each works and where a custom link pays off.
| Feature | DeveloperLookBest fit | Vendor connector | Nightly exports |
|---|---|---|---|
| Setup speed | 2 to 11 weeks | Days to weeks | Same week |
| Upfront cost | From $1,150 | Often bundled | Staff time only |
| Stock accuracy | Sellable, updated through the day | Depends on vendor | Once a night |
| Legacy systems | EDI, SFTP, or local agent | Vendor's own WMS | Any file format |
| ERP in the loop | Receipts and shipments posted | Rarely included | Keyed by hand |
| Custom rules | Holds, buffers, routing | Vendor settings | None |
| Stalled feeds | Alert within the hour | Vendor dashboard | Noticed at oversell |
| Ownership | Your code and accounts | Vendor's platform | Your scripts |
DeveloperLook
Vendor connector
- Setup speed
- DeveloperLook: 2 to 11 weeksVendor connector: Days to weeks
- Upfront cost
- DeveloperLook: From $1,150Vendor connector: Often bundled
- Stock accuracy
- DeveloperLook: Sellable, updated through the dayVendor connector: Depends on vendor
- Legacy systems
- DeveloperLook: EDI, SFTP, or local agentVendor connector: Vendor's own WMS
- ERP in the loop
- DeveloperLook: Receipts and shipments postedVendor connector: Rarely included
- Custom rules
- DeveloperLook: Holds, buffers, routingVendor connector: Vendor settings
- Stalled feeds
- DeveloperLook: Alert within the hourVendor connector: Vendor dashboard
- Ownership
- DeveloperLook: Your code and accountsVendor connector: Vendor's platform
Projects We've Built
Ecommerce Projects We Have Built
Shopify and ecommerce builds we've shipped for clients, where stock, orders, and shipping depend on what happens in the warehouse.
Modeverse Ecommerce Web Design & Development
- Fashion
- Retail
- E-commerce
Borna's General Hardware Ecommerce Website
- Retail
- E-commerce
- Website
Sefinix Furniture Ecommerce Store and Dashboard
- Furniture
- Dashboard
- E-commerce
Sevanor Food Delivery App and Restaurant Dashboard
- Food & Beverage
- Food Delivery
- Dashboard
What Our Clients Say
What Clients Say After Launch
Feedback from ecommerce teams we have built warehouse and order integrations for.
We had a different kind of problem. People were visiting the store, adding products to their carts, and then disappearing before they finished the order. We had tried a few apps and made changes here and there, but nothing really seemed to solve the bigger issue. The team went through the shopping experience with us and pointed out things we hadn't really noticed ourselves. They cleaned up the cart and checkout flow, made the mobile experience much smoother, and helped us make the store feel easier to shop. I’m not going to pretend we fixed everything overnight, but it finally feels like the store is helping the sale instead of getting in the way of it.
The mobile experience is probably my favourite part of the new site. We had spent a lot of time making sure the desktop version looked right, and the team kept pushing us to think about how everything would actually feel on a phone too. They were right. The navigation is clean, the interactions feel natural, and everything we’ve tested so far works exactly as it should. They also went through the links, forms, integrations, and other details more than once before launch, which I really appreciated. And even after going live, we could still reach out when something came up. The whole process felt friendly, organised, and surprisingly straightforward.
We had a pretty specific idea of what we wanted our website to become, but I wasn’t sure how easily we could explain all of it to a development team. There were quite a few moving parts, and we were working toward a deadline, so I expected a few things to get lost along the way. That never really happened. They understood what we were trying to achieve, kept us updated throughout the process, and got everything ready within the agreed timeline. The final site feels much easier to navigate, works beautifully on mobile, and is noticeably smoother for our customers. It was a huge relief seeing the original idea actually turn into the website we had in mind.
1,000+
Projects shipped
10+
Years of experience
Top 3%
Upwork Top Rated Plus
5 stars
Average review score
Work Culture
Why Warehouse Leads Trust Us With Their Floor Data
A warehouse link fails loudly on the floor and quietly online. These habits keep pickers, stock, and your store working from the same numbers.
Sellable counts, not shelf counts
We send Shopify on-hand stock minus units allocated, damaged, or on hold. Your store stops promising items that are already in a tote.
Tested on your floor
Test orders go through real pick, pack, and ship with your team and scanners. Labels, totes, and screens get checked before customers see anything.
Quiet-shift cutovers
We switch integrations on during your slowest hours, with the previous setup on standby. Your peak shift doesn't meet untested code.
Cycle counts checked against feeds
After launch we compare stock feeds with your cycle counts every week. Drift gets traced to a transaction type, not written off as shrink.
Vendor connectors checked first
Many WMS vendors ship a solid Shopify connector. If yours already handles orders, stock, and returns, you'll hear that from us before any quote.
Everything registered to you
Code, EDI maps, and every service account are registered to your company. Any developer can take over from the runbook.
Overview
How does WMS integration connect a warehouse to Shopify and an ERP?
DeveloperLook builds WMS integration that releases paid orders to your warehouse, sends shipments and tracking back to Shopify, and shows only sellable stock online. Your ERP joins the loop when you run one, and legacy systems connect by EDI or files. Projects start at $1,150, take 2 to 11 weeks, and we check your vendor's connector first.
DEVELOPERLOOK
Project facts · WMS Integration
- Service
- WMS Integration (order release, shipments, sellable stock, receipts, returns)
- Typical timeline
- 2 to 11 weeks, depending on WMS age, ERP, and sites
- Platforms
- Shopify and Shopify Plus, cloud or on-prem WMS, plus your ERP
- Built with
- WMS APIs, EDI X12, SFTP, and Shopify's GraphQL Admin API
- Experience
- 10+ years of development experience and 1,000+ shipped projects
- Post-launch support
- 30 to 90 days, depending on plan
- Communication
- Calls in US, UK, and AU business hours
- Starting price
- From $1,150 USD, fixed scope after a free WMS review
Reviewed 28 Sep 2026 by Saimul Islam
Good fit
Brands running their own warehouse
You pick and pack in your own building with a WMS, and Shopify still learns about shipments from a nightly file.
Stores overselling picked stock
Your store sells units your team already picked for other orders, because Shopify sees shelf stock instead of free stock.
Operations linking WMS and ERP
You need a WMS ERP integration so receipts, adjustments, and shipments reach finance without anyone keying them in.
Warehouses on legacy software
Your WMS runs on a server in the building, has no cloud API, and trades files over SFTP or EDI each night.
Agencies with warehouse-heavy clients
Your client's warehouse software needs a Shopify link, and you want it delivered as your agency's own work.
Not a fit
An outside 3PL
An outside 3PL runs your warehouse, not your own team. Our Shopify 3PL Integration service covers that setup.
Routing before the warehouse
You need orders routed across stores and locations before any warehouse sees them. Our Shopify Order Management System service does that.
NetSuite WMS
Your warehouse runs NetSuite WMS inside NetSuite. A NetSuite WMS integration with Shopify then runs through our Shopify NetSuite Integration service.
One small stockroom
You run one small stockroom without a WMS. Our Shopify Inventory Management System service costs less than our $1,150 build.
Not sure we're the right fit?
Send a two-line brief. We'll tell you honestly whether we're the right team.
Pricing
Transparent Starting Prices for WMS and ERP Integration
These are starting points in USD. Your final price depends on your WMS's age and connection method, ERP involvement, and warehouse count, and you get a fixed proposal after a free WMS review.
For one warehouse on a cloud WMS with an API, connected to one Shopify store.
$1,150one-time, USD
- Free warehouse review and field map
- Paid orders released to the WMS
- Shipments and tracking back
- Sellable stock per warehouse
- Stall alerts and nightly count check
- 30 days post-launch support
Recommended
For warehouses whose ERP also needs purchase orders, receipts, and shipments.
$2,900one-time, USD
- Everything in Single-Warehouse Sync
- ERP link for POs, receipts, and shipments
- Returns graded and restocked
- Buffers for fast sellers
- Retry queue with replay
- 60 days post-launch support
For on-prem or older WMS software, or up to 3 warehouses under one set of rules.
$6,000one-time, USD
- Everything in WMS and ERP Sync
- EDI, SFTP, or local agent connection
- Up to 3 warehouses
- Lot, serial, and expiry tracking
- Sync health dashboard
- 90 days post-launch support
For Agencies
White-Label Warehouse Integrations for Agencies and Studios
You own the client relationship. We supply the warehouse engineering behind your offer: floor reviews, order release, stock feeds, EDI maps, and ERP links. Your client works with your team, and the code and runbook come to you.
How the partnership works
White label: your client only ever sees your brand
- Your client
- You, the agency
- DeveloperLook
Share the brief
Send the client's WMS name, version, sites, and order volume so we can size it.
- Client needs
- You share the details
- Details received
We scope and price
A fixed quote arrives with a stock rules summary the client signs.
- Scope and plan
- Proposal to resell
- Your quoteYOUR LOGO
Build and hand off
We build, floor-test with the client's team, and deliver code and runbooks.
- Done by our team
- Your brand on it
- Handed to your clientDone
Partner with DeveloperLookDelivered under your brand
Stay client-facing
You lead the client and warehouse calls while we build quietly.
Predictable delivery
Fixed scope per warehouse, so the price you quote holds.
Floor-level experience
Engineers who have tested integrations with pickers and scanners.
Flexible capacity
One warehouse first, then more sites as the client expands.
The Right Technology for Your Project
Technology Stack
Shopify's GraphQL Admin API on the store side, your WMS's API, EDI, or files on the floor side, and your ERP's API when it joins the loop.
Shopify
GraphQL
OpenAPI
Node.js
- NetSuite
SAP
Microsoft Dynamics 365
Odoo
Sage
UPS
FedEx
USPS
DHL
PostgreSQL
Docker
AWS
Slack
Google Sheets
FAQ
Frequently Asked Questions
Straight answers on WMS and ERP links, Shopify connections, legacy systems, overselling, cost, and timelines.
Saimul IslamFounder & CEO, DeveloperLookStill have questions?
Send a message or book a call with the team.
The ERP sends item records, purchase orders, and expected receipts to the WMS, and the WMS sends back receipts, adjustments, and shipments. The ERP owns costs and financial stock, while the WMS owns bins and picks. An ERP WMS integration starts with the item master, since every later message depends on matching SKUs.
We set up each warehouse as a Shopify location and send paid orders to the WMS as pick requests by API, EDI, or file drops. A Shopify WMS integration then posts each shipment with tracking and writes sellable stock back to that location. Orders under fraud review get a fulfillment hold, so the floor only sees orders ready to pick.
At minimum, paid orders go out, and shipments with tracking and sellable stock come back. Most stores also sync cancellations before pick, expected receipts for pre-orders, graded returns, and item data like barcodes, weights, and dimensions. Each record gets one owner system, so edits don't collide.
Our warehouse work starts at $1,150 for one site on a cloud WMS with an API, including a floor test and 30 days of support. Adding your ERP, graded returns, and stock buffers costs $2,900. Legacy or on-prem systems, or up to 3 warehouses, cost $6,000. A free warehouse review sets your fixed quote.
One warehouse on a cloud WMS is running in 2 to 4 weeks. Adding an ERP link takes 5 to 7 weeks, and legacy systems or several warehouses take 8 to 11 weeks. EDI testing with the WMS vendor and a quiet-shift cutover usually set the final date.
Yes, older and on-prem systems are a regular part of this work. We connect through EDI documents like the 940 shipping order and 945 shipping advice, scheduled SFTP files, database staging tables, or a small agent on your server. The agent only makes outbound connections, so no inbound firewall ports open.
We send Shopify sellable stock, not shelf stock: on-hand minus units allocated to open orders, damaged, or on hold. Fast sellers get a buffer held in Shopify's safety stock state, which keeps those units off sale. Feeds update through the day, and a nightly full count corrects any drift.
A WMS runs the warehouse floor: bins, picks, packing, and shipping. An OMS decides where each order goes across stores, channels, and warehouses. An ERP runs the business side: purchasing, costs, and finance. In an integration, each owns different records, and mixing them up is how stock gets counted twice.
Your company owns it outright. The code runs in your cloud account, EDI maps and file schedules sit in your repository, and every credential is issued to you. The runbook explains each feed and alert, so your IT team can maintain it without us or hand it to another developer.
Each plan includes post-launch support: 30, 60, or 90 days. We fix issues, tune buffers, and adjust feeds when your WMS vendor updates its API. During that window we compare stock drift with your cycle counts each week. Later work, like a second warehouse, gets its own fixed quote.
Saimul IslamFounder & CEO, DeveloperLookStill have questions?
Send a message or book a call with the team.
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