The raw number of units sitting in your warehouse isn't the same as what you can actually promise a customer right now. Some of that stock might already be reserved for an existing order. Some of your "available" stock for a dropship SKU might not physically be in your warehouse at all. Treating raw on-hand as available stock overstates what you can actually sell, which is exactly how overselling happens.
What "real available stock" actually needs to account for
Genuine on-hand stock across your own locations -- but not every location necessarily counts, since a warehouse explicitly excluded from production/fulfillment shouldn't inflate what's sellable. Dropship stock, which isn't physically in your own warehouse but is still legitimately available through a supplier -- tracked through its own buffer rather than pretending it doesn't exist or conflating it with owned inventory. And active reservations -- stock already committed to an order that hasn't shipped yet, which needs to be subtracted, not counted as available twice.
How Vedron handles this
Vedron's available-stock calculation combines real on-hand stock across all locations except those explicitly flagged as excluded from production, adds dropship on-hand stock tracked through its own dedicated buffer location, and subtracts active reservations -- with the result floored at zero rather than ever showing a negative "available" number. This single calculation is what every channel (storefront, Amazon, Allegro, eBay, and every other connected marketplace) reads from, so "available stock" means the same thing everywhere it's shown, rather than each channel computing its own approximation.
The same underlying data supports multi-location transfers and bundle disassembly -- moving stock between locations or breaking a bundled product back into its components is tracked through the same inventory transaction model, not a separate, disconnected mechanism.
Frequently asked questions
What counts as a "location excluded from production"?
A location explicitly flagged that way -- typically somewhere stock physically exists but isn't meant to count toward what's sellable (for example, a damaged-goods or quarantine location) -- so its stock doesn't inflate available quantity elsewhere.
How is dropship stock different from a location I own?
It's tracked through its own buffer specifically because it isn't guaranteed the way owned inventory is -- it reflects supplier-side availability rather than physical stock you control directly.
Can available stock ever show as negative?
No -- the calculation is floored at zero, so even if reservations technically exceed on-hand plus dropship stock, available stock is reported as zero rather than a negative number.
Have a question specific to your setup?
Every seller's marketplace mix and stock setup is a little different -- if you're weighing this against your own, book a short call and we'll walk through it with you directly rather than leaving you to figure it out from a blog post alone.
Beta offer: if you join as a beta client, custom integration setup -- configured for your actual marketplace and inventory mix -- is free for your first 2 months.
Still evaluating and need more time than the standard trial window? Just ask us for an extension -- we're happy to give you the room to actually test it properly before deciding.