Use Case
Real-Time Inventory
Sync
Keep stock levels perfectly accurate across every storefront, warehouse, and channel — in real time. Eliminate overselling, stockouts, and manual inventory counts by making your ERP the single source of truth.
The Problem
Disconnected inventory data costs you customers — and money
When your storefront, ERP, and warehouse all show different stock numbers, every day brings new problems — cancelled orders, angry customers, and stockouts that kill your conversion rate at the worst possible moment.
Overselling — Cancelled Orders & Chargebacks
A customer buys an item shown as "In Stock" on Shopify that was committed in NetSuite hours ago. You cancel the order. The customer charges back. You lose the sale, the customer, and the fee.
Manual Inventory Updates — Hours Wasted Daily
Your ops team exports ERP stock reports and manually updates Shopify every morning. The data is already stale before the working day starts. At peak volume, it's impossible to keep up.
Channel Conflicts — Multiple Stores, One Stockpile
Selling across Shopify, Amazon, and your own website from the same warehouse with no unified inventory? One flash sale can drain stock that customers on other channels have already purchased.
Inbound Stock Invisible Until Manually Updated
A PO lands at your warehouse. The goods are in the building, but Shopify still shows "Out of Stock" for three days while ops waits to update the count. You miss sales on stock you already own.
Blind to Multi-Location Stock — Wrong Routing
You have stock in three warehouses but no visibility into which location has what. Orders route to the wrong warehouse, incurring avoidable shipping costs or generating out-of-stock failures.
Returns Stock Not Restocked — Phantom Inventory
Returned goods sit in a "received but not restocked" limbo. Your ERP thinks they're available. Your warehouse hasn't graded them. Overselling happens on stock that isn't actually sellable.
How It Works
ERP as the single source of truth — pushed everywhere, instantly
We make your ERP the authoritative inventory system and build a real-time event pipeline that pushes accurate stock levels to every channel the moment anything changes.
01
Stock Event in ERP
A stock movement fires in your ERP — a pick, a PO receipt, a return restock, a transfer, or a cycle count adjustment. The event triggers the sync pipeline immediately.
02
Calculate Available Qty
The integration calculates true available quantity — on-hand minus committed minus reserved — per SKU, per location. Buffer rules apply to prevent edge-case overselling.
03
Push to All Channels
Updated quantities push to every connected channel simultaneously — Shopify, Amazon, BigCommerce, your B2B portal — via their native inventory APIs.
04
Threshold Alerts Fire
Low-stock thresholds trigger automatic reorder point alerts and can push purchase orders to suppliers — buying teams act before stockouts, not after.
05
Reconcile & Audit
A scheduled reconciliation compares ERP quantities against every channel and flags discrepancies. Full audit trail of every stock event for inventory accounting and compliance.
What Gets Synced
Every stock event that affects available inventory
Real-time inventory sync isn't just about pushing numbers — it's about capturing every event that changes what's actually available to sell, across every location and channel.
Sales Order Commitments
When an order commits inventory in your ERP, available quantity updates on every channel immediately — before the item is even picked, preventing a second customer from buying the same stock.
On-hand qtyCommitted qtyAvailable to sell
Purchase Order Receipts
When inbound stock is received and putaway in your ERP or WMS, available quantities update on Shopify and all channels immediately — no waiting for manual data entry.
PO receipt qtyPutaway dateLocation
Returns & Restock Events
Returned goods that pass grading and are restocked in your ERP immediately increase available quantity on your storefront. Only sellable stock is made available — not ungraded returns.
Restocked qtyGrade statusSellable flag
Multi-Location Inventory
Stock levels sync per warehouse location — route orders to the correct location based on live availability, proximity, or cost rules. No more routing orders to empty warehouses.
Location qtyRouting rulesTransfer orders
Inventory Adjustments
Manual adjustments, write-offs, cycle count corrections, and damage recordings in your ERP immediately update available quantities on all channels — no lag, no phantom inventory.
Adjustment qtyReason codeEffective date
Low-Stock Thresholds & Reorder Points
Configurable low-stock rules trigger alerts, hide-from-storefront flags, and automatic purchase order suggestions when any SKU drops below its reorder point.
Reorder pointSafety stockAlert trigger
Automation Flows
Key inventory sync flows we build
Six inventory automation flows that keep every channel accurate — from the moment stock moves in your warehouse to the moment a customer tries to buy it.
01
ERP → Storefront Real-Time Push
Every stock movement in your ERP — pick, receipt, adjustment, or return — immediately pushes updated available quantities to Shopify and all connected channels via their inventory API.
Trigger:Any Stock MovementReal-Time
02
Inbound PO → Immediate Stock Update
Purchase order receipts in the ERP or WMS immediately unlock available quantity on your storefront — customers can buy in-transit or just-received stock the moment it's in the system.
Trigger:PO ReceivedPutaway Complete
03
Multi-Location Inventory Routing
Orders route to the warehouse with available stock for the ordered SKU — configurable rules by location, proximity, or fulfilment cost. No routing to empty locations.
Trigger:Order ReceivedLocation Selection
04
Return Restock → Availability Update
Returned goods that pass inspection and are restocked in the ERP immediately increase available quantity on Shopify — only graded, sellable stock is added back to available inventory.
Trigger:Return RestockedGrade Passed
05
Low-Stock Alert & Auto-Reorder
When a SKU drops below its reorder point, the integration triggers a buying team alert, optionally hides the item from the storefront, and can auto-create a draft PO in the ERP.
Trigger:Below Reorder PointSafety Stock Breach
06
Scheduled Reconciliation & Drift Fix
A daily full reconciliation compares ERP quantities against every channel and automatically corrects any discrepancy caused by missed events or API failures — a safety net that keeps counts honest.
Trigger:Daily ScheduleDiscrepancy Detected
Challenges We Solve
Inventory sync challenges we solve — so you don't have to
Real-time inventory sync has well-known failure points. Here is how we prevent each one from causing overselling, count drift, or data corruption in your channels.
↓
Challenge: Race Conditions — Two Customers, Last Unit
Commit-before-push with inventory lock
High-traffic SKUs can be bought by two customers simultaneously if the channel count lags by even a second. We commit inventory in the ERP before pushing the new available count — the channel update reflects the already-committed state.
↓
Challenge: Missed Events Causing Count Drift
Event + scheduled reconciliation hybrid
Relying purely on event-driven sync means any missed event causes permanent drift. We combine real-time events with a daily full reconciliation that resets counts to the ERP master — counts never permanently drift.
↓
Challenge: High-Volume Flash Sale Overloading the API
Rate-aware batching + queue throttle control
A flash sale can generate thousands of stock events per minute. Shopify's inventory API has rate limits. We batch updates intelligently, throttle within limits, and queue any overflow — every update lands without API failures.
↓
Challenge: SKU / Item Code Mismatches Between Systems
SKU normalisation + mapping table
Your Shopify SKU, ERP item code, and 3PL barcode are often all different. We build and maintain a SKU mapping table that translates identifiers across every system — one change to the table updates everywhere.
↓
Challenge: Ungraded Returns Showing as Available
Grade gate before availability flag
Returns that arrive but haven't been inspected shouldn't increase sellable stock. We gate the availability update behind the ERP grading step — only goods that pass inspection get added back to available inventory on the channel.
↓
Challenge: Multi-Channel Conflicts During Promotions
Channel priority rules + allocation caps
Running a promotion on one channel that could drain stock other channels rely on? We support per-channel allocation caps and priority rules — protecting stock for key channels during high-velocity events.
Why Integratt
Why choose Integratt for real-time inventory sync?
We've delivered inventory sync for high-volume DTC brands, B2B distributors, and multi-channel retailers. We know the edge cases that break inventory accuracy — and we build around them.
12+
Years of iPaaS Experience
Deep expertise in Shopify, NetSuite, SAP, and WMS inventory APIs across Celigo, Boomi, MuleSoft & Oracle OIC.
2–4 wks
Fast Go-Live
Pre-built inventory sync templates mean most implementations go live in 2–4 weeks — ready before your next peak season.
99.9%
SLA-Backed Uptime
24/7 monitoring with a 99.9% uptime SLA — stock events process reliably even during peak flash sales and Black Friday spikes.
24/7
Always-On Monitoring
Count drift, missed events, and API failures alert instantly and resolve automatically before they cause an oversell or a customer cancellation.
Ready to Sync?
Your stock levels should be the same
everywhere — in real time
Book a free 30-minute session with our inventory sync architects. We'll map your current stock movement flows and show you exactly how we'd make every channel accurate in real time.
✓ No commitment required✓ Fixed-price delivery✓ Go live in 2–4 weeks✓ Managed support included
Questions? connect@integratt.com