One number for available stock
Inventory sync sounds simple until you account for open orders, items in transit, stock reserved for wholesale accounts, bundles made from components, and channels that update on different schedules. Most stock discrepancies come from these rules being applied inconsistently, not from the connection itself.
We define how available-to-sell is calculated for each channel, implement it in one place, and push updates to every system. A daily reconciliation compares them and reports any difference, so a problem is caught the same day.
What is included
Stock level sync
Available quantities pushed to each channel as they change.
Allocation rules
Safety stock, channel caps and reserved quantities applied consistently.
Bundles and kits
Availability of kits calculated from their components.
Order flow back
Orders from each channel reserved immediately in the ERP.
Low-stock alerts
Notifications and draft purchase orders when items hit reorder points.
Reconciliation
A daily comparison report highlighting any mismatch.
Signs your inventory is out of sync
Stock problems usually show up in customer service first.
- Overselling onlineOrders accepted for items that are not in stock.
- Channels show different stockThe webstore, marketplace and ERP disagree.
- Manual stock uploadsSpreadsheets exported and imported on a schedule.
- Month-end stock surprisesReconciliation reveals differences nobody can explain.
How it is built
Agree the rules
How available-to-sell is calculated for each channel, including reserves and kits.
Connect systems
ERP, warehouse and channels connected through their APIs or feeds.
Reconcile
A daily comparison report and alerts for differences.
Monitor
Sync health, errors and drift checked continuously.
An example inventory finding
The rules, not the connection, are usually the problem.
- What we found
- The webstore receives stock for the kit as a separate item, updated manually once a week.
- Fix
- Kit availability calculated from components in real time and pushed to every channel.
- Effect
- No more kit orders that cannot be fulfilled.
What makes inventory sync hard
The connection is rarely the hard part. These are.
- Several sources of truth. The ERP, warehouse system and a 3PL can all claim to be right.
- Units of measure. Cases in the ERP, eaches online, pallets at the warehouse.
- Reserves and allocations. Stock held for key customers or open orders should not be sold online.
- Rate limits. Marketplaces limit how often stock can be updated, so changes need prioritising.
What inventory sync typically costs
Typical fixed-price ranges. Your assessment gives an exact price before any build starts.
| Scope | Typical build price |
|---|---|
| ERP to one webstore | $8,000–$18,000 |
| ERP to several channels and marketplaces | $15,000–$35,000 |
| Including a 3PL or second warehouse | $20,000–$40,000 |
Connector or middleware subscriptions, where used, are paid directly to the provider.
Common questions
How real-time is the sync?
Where systems support webhooks, updates are near-instant. Where they only support scheduled imports, we sync as often as the system allows, typically every few minutes.
Can you integrate a warehouse system we do not control, such as a 3PL's?
Usually, through the 3PL's API, file feeds or reports. We have to work within whatever access they provide.
What about marketplaces like Amazon?
Yes. Marketplace stock and orders are synced through their seller APIs or through a connector your team already uses.
Find out what one process could save you
Book a paid automation assessment. We map the process with your team, measure the time it takes, and give you a fixed-price build plan with expected savings. If automation is not worth it, we will tell you.