Amazon Inventory Management

Amazon Seller Central tracks orders and inventory for your Amazon listings. What it doesn't do: sync that inventory with your Shopify store, your WooCommerce store, your Walmart Marketplace listing, or any other channel. The moment a sale comes in on another platform, your Amazon quantity is out of date.

For sellers operating across multiple channels, that gap is where oversells happen.

Ordoro connects to Amazon as one of multiple sales channels sharing a single inventory pool. When a sale arrives from any channel, Ordoro decrements the shared count and writes the updated quantity back to Amazon and every other connected channel automatically.

FBM vs. FBA: What Ordoro Manages

FBM (Fulfillment by Merchant): Ordoro imports FBM orders from Amazon Seller Central (US, Canada, and UK), manages fulfillment from your warehouse, and writes inventory back to your Amazon listings. Shipping labels, tracking, and inventory sync all run through Ordoro.

FBA (Fulfillment by Amazon): FBA orders are fulfilled by Amazon's fulfillment network. Ordoro tracks your FBA inventory separately — syncing FBA stock levels into a dedicated read-only warehouse in your Ordoro account. You can see what Amazon is holding alongside your own warehouse stock without switching to Seller Central. Ordoro also supports Multi-Channel Fulfillment (MCF): route orders from Shopify, WooCommerce, or other channels to Amazon FBA for fulfillment.

For sellers running both FBM and FBA listings, Ordoro keeps both inventory pools visible from one place. See the full comparison: Amazon FBA vs. FBM

How Ordoro Connects to Amazon Seller Central

Ordoro integrates with Amazon Seller Central for FBM operations. Once connected:

• Orders import automatically from Amazon into your Ordoro fulfillment queue alongside orders from your other channels
• Inventory writes back to Amazon on a configurable schedule — every 10 minutes, hourly, every 6 hours, or daily — keeping your Amazon listing quantities current
• Tracking numbers post back to Amazon when you ship an order from Ordoro, triggering Amazon's customer shipping notification automatically

Ordoro supports Amazon marketplaces in the US, Canada, and UK.

Ordoro commits inventory immediately when an order arrives — before the writeback cycle runs — so the same units can't be sold on Amazon and another channel simultaneously within the window between syncs. See: How to enable inventory writeback to sales channels | Auto-sync inventory across sales channels | Watch: How Inventory Sync Works in Ordoro

Amazon FBA Inventory Sync

Ordoro syncs your FBA inventory into a dedicated read-only FBA warehouse in your account. Once connected, your FBA stock levels appear in the Ordoro dashboard alongside your own warehouse inventory — no manual check in Seller Central needed.

• FBA inventory syncs on a configurable schedule
• The FBA warehouse is read-only in Ordoro — quantities are managed through Amazon; Ordoro reflects what Amazon reports
• When FBA stock levels change (sales, returns, inbound shipments), the counts update on the next sync
• FBA inventory is visible per SKU alongside your Physical On Hand, Committed, and Available On Hand quantities from your own warehouses

See: How do I synchronize my Amazon FBA inventory with Ordoro? | How do I set up my Ordoro products for FBA? | Learn more: Amazon AWD

Amazon Multi-Channel Fulfillment (MCF)

Amazon Multi-Channel Fulfillment lets you use your FBA inventory to fulfill orders from channels other than Amazon — Shopify, WooCommerce, eBay, or any other connected channel. When a Shopify order comes in, Ordoro can route it to Amazon FBA instead of your own warehouse. Amazon ships the order directly to the customer using your FBA stock.

How MCF works in Ordoro:

• A Shopify or WooCommerce order arrives in Ordoro's fulfillment queue
• You assign FBA as the fulfillment method — either manually or automatically via automation rules
• Ordoro sends the fulfillment request to Amazon
• Amazon picks, packs, and ships from your FBA inventory
• Tracking syncs back to Ordoro and posts to the originating sales channel automatically

FBA shipping speeds: When routing to MCF, you select the FBA fulfillment speed (Standard, Expedited, or Priority). See: How do I know which FBA speed to pick?

Automation rules for MCF: You can configure Ordoro's automation rules to automatically assign the FBA shipping method to qualifying orders on import — for example, all Shopify orders containing a specific SKU route to FBA automatically. See: Can you automatically assign an FBA shipping method to orders? | How to route orders to Amazon FBA | How can I route orders to FBA if my SKU is different than the FBA SKU?

Multichannel Inventory Including Amazon

If you sell on Shopify, WooCommerce, BigCommerce, eBay, Walmart, Etsy, or other channels alongside Amazon, Ordoro manages all of them from one shared inventory pool.

Ordoro tracks three states per SKU:

• Physical On Hand (POH) — units physically in your warehouse
• Committed (CMT) — allocated to open orders not yet shipped
• Available On Hand (AOH) — what's available for new sales (POH minus CMT)

The quantity Ordoro writes to Amazon and every other channel is AOH. When an order arrives, inventory commits immediately — before the next writeback cycle — so the same units can't sell twice.

Multi-Warehouse Inventory Tracking

If your stock is split across warehouses, a 3PL, or multiple fulfillment locations, Ordoro tracks inventory at each location independently. When an Amazon FBM order ships from a specific warehouse, inventory decrements from that location only.

You control which warehouse's stock feeds your Amazon listings. A warehouse holding reserve or wholesale stock can be excluded from your Amazon listing quantity. See: How do I transfer inventory between warehouses? | Warehouse inventory writeback by sales channel

Kitting and Bundle Inventory for Amazon

If you sell product bundles on Amazon alongside individual components listed separately, Ordoro tracks availability at the component level. Define a kit by specifying which SKUs it contains and in what quantities. Kit availability is calculated from live component inventory. When a bundle sells on Amazon, component quantities decrement automatically — and kit availability updates across all connected channels. See: How kitting works in Ordoro | Watch: How to Set Up Kits in Ordoro

Purchase Orders and Inventory Replenishment

Ordoro includes a full purchase order workflow for restocking:

1. Identify low-stock SKUs using inventory reports and per-SKU reorder thresholds
2. Create a PO against a specific supplier, with quantities, costs, and expected delivery
3. Send the PO to your supplier by email directly from Ordoro
4. Receive inventory against the open PO when stock arrives — quantities update automatically on receipt
5. Partially receive if a supplier ships in batches — Ordoro tracks outstanding quantities until the PO closes

Supplier costs on POs update the product's weighted average unit cost, keeping margin calculations current as supplier prices change. See: How to receive items from a PO | Purchase Order Management Software

Order Fulfillment and Shipping

Amazon FBM orders appear in the same Ordoro fulfillment queue as orders from your other channels. Your team works from one screen regardless of channel origin.

• Batch label printing — print labels for dozens or hundreds of orders at once
• Automation rules — assign shipping methods, route to warehouses, and tag orders automatically on import
• Discounted carrier rates — USPS (up to 67% off retail), FedEx, UPS, and Canada Post
• Tracking pushback — tracking posts to Amazon automatically on shipment, triggering Amazon's fulfillment notification to the customer

See the full shipping workflow: Amazon Shipping Software

Watch: How to Create Bulk Shipping Labels in Ordoro

Barcode Scanning for Receiving and Fulfillment

Ordoro supports barcode scanning at two points in the workflow:

Receiving: Scan items against an open purchase order as stock arrives. Each scan increments the received quantity, and Ordoro tracks remaining quantities against the PO. See: Can I scan in barcodes for PO Goods Receipts?

Pick/pack verification: Before any shipping label prints, warehouse staff scan each item in an order to verify it matches what was ordered. If the wrong item is scanned, Ordoro flags it — catching the mispick before it ships. Watch: Reduce Shipping Errors with Ordoro's Barcode Packing Workflow

Customer Support

Ordoro is run by a small, dedicated team. When you have a question, you reach a real person — by phone, email, or screen share — not a support bot or ticketing queue. Phone support runs Monday through Friday, 8:30 AM to 5:00 PM CST.

Every new account gets five weekly onboarding calls with a dedicated specialist to configure your channels, warehouses, suppliers, and workflows from the start.

Frequently Asked Questions

Does Ordoro integrate with Amazon?

Yes. Ordoro connects to Amazon Seller Central (US, CA, UK) for FBM orders. Orders import automatically into your Ordoro fulfillment queue. Inventory writes back to your Amazon listings on a configurable schedule. FBA inventory is tracked separately.

What is the difference between FBM and FBA for inventory management?

FBM (Fulfillment by Merchant) means you ship orders from your own warehouse — Ordoro manages FBM orders, fulfillment, and inventory sync. FBA (Fulfillment by Amazon) means Amazon ships orders from their fulfillment centers — Ordoro tracks FBA inventory but FBA orders don't route through Ordoro's fulfillment workflow.

How does Ordoro prevent overselling on Amazon?

Ordoro maintains a single shared inventory count per SKU. When a sale arrives on Amazon, Ordoro commits that inventory immediately — before the writeback to other channels runs. The Available On Hand quantity (physical stock minus committed orders) is what gets written back to Amazon, preventing the same units from selling on two channels within the window between syncs.

Can Ordoro sync Amazon inventory with Shopify?

Yes. Connect both Shopify and Amazon to Ordoro. When a sale comes in on either channel, Ordoro decrements the shared inventory count and writes the updated quantity to both platforms automatically.

Can Ordoro handle Amazon orders alongside eBay, Walmart, and WooCommerce orders?

Yes. All connected channels share the same inventory pool in Ordoro. Orders from Amazon, eBay, Walmart, WooCommerce, Shopify, and others all appear in one fulfillment queue. Inventory decrements and writebacks happen across all channels from one system.

Does Ordoro support Amazon in Canada and the UK?

Yes. Ordoro connects to Amazon marketplaces in the US, Canada, and UK for FBM order management and inventory sync.

Can Ordoro show my Amazon FBA stock levels?

Yes. Ordoro syncs your FBA inventory into a dedicated read-only FBA warehouse in your account. FBA stock levels appear in the Ordoro dashboard alongside your own warehouse inventory on a configurable sync schedule. See: How do I synchronize my Amazon FBA inventory with Ordoro?

Can I route Shopify or WooCommerce orders to Amazon FBA (MCF)?

Yes. Ordoro supports Amazon Multi-Channel Fulfillment — you can route orders from any connected channel (Shopify, WooCommerce, eBay, etc.) to your FBA inventory for fulfillment. Assign the FBA shipping method manually or automatically via automation rules. Amazon ships the order and tracking syncs back to the originating channel. See: How to route orders to Amazon FBA | Can you automatically assign an FBA shipping method to orders?

How does Ordoro handle kits and bundles on Amazon?

Define kits in Ordoro by listing the component SKUs and quantities per kit. Kit availability is calculated from live component inventory. When a bundle sells on Amazon, component quantities decrement automatically — and kit availability across all connected channels updates on the next sync.

Ordoro is a 4.9-star-rated inventory and shipping platform used by hundreds of Amazon sellers — managing FBM fulfillment, multichannel inventory sync, purchase orders, kitting, and barcode warehouse workflows from one dashboard.

See: Amazon US and Ordoro setup | Which Amazon order statuses are downloaded into Ordoro? | How does Ordoro post tracking numbers to Amazon? | What type of Amazon seller accounts integrate with Ordoro?