Inventory Overview
Purpose
Give a single, reliable view of stock across every connected Amazon account and marketplace.
Who this page is for
Anyone who checks stock levels regularly — this is usually the first page a Tymmerce user opens each day.
Reading the Inventory table
| Column | Meaning |
|---|---|
| On Hand | Units currently in Amazon's fulfillment network, available to sell |
| Inbound | Units shipped to Amazon but not yet checked in |
| Reserved | Units allocated to open orders or FBA processing |
| Days of Stock Remaining | On-hand units divided by your average daily sales velocity |
| Sync Status | When this row last successfully synced from Amazon |
:::info Screenshot placeholder [Inventory table with On Hand, Inbound, Reserved, and Days of Stock Remaining columns visible] :::
How products are unified across marketplaces
If you sell the same product on, say, Amazon US and Amazon Canada under one seller account, Tymmerce links them via the underlying ASIN/SKU relationship so they appear as one master product with per-marketplace stock breakdowns, rather than as unrelated rows. See Understanding Inventory Data for how that matching works and what to do when it gets a product wrong.
How often inventory updates
Inventory syncs run automatically on a schedule; you can also trigger a manual sync for a single account from Amazon Accounts → [Account] → Sync Now. A manual sync doesn't replace the scheduled sync — it just pulls fresh data immediately, useful right after a big inbound shipment lands.
If a number looks stale, check the Sync Status column before assuming something is broken — it tells you exactly how old the data you're looking at is.
Common issues
A product showing 0 On Hand immediately after a large FBA shipment is usually still Inbound, not actually out of stock — check the Inbound column before reacting.
See Common Inventory Issues for the full troubleshooting list.