Overselling guard: reserve stock you also sell on other channels
Mark a SKU as multichannel and reserve units so DashVue warns before an eBay listing can oversell.
If you sell the same stock on eBay and elsewhere, this article shows you how to mark a SKU as multichannel and reserve units for those other sales, so DashVue can warn you before your eBay listing oversells.
The problem this solves
If you hold one pool of physical stock but list it for sale in more than one place, a sale on another channel reduces what you actually have left for eBay, even though nothing has changed in DashVue yet. Without any way to account for that, your eBay listing’s quantity can look available when it is not, and you risk selling an item you no longer have.
The overselling guard on /overselling gives you a way to flag which SKUs are sold elsewhere too, and to reserve a number of units against those other channels, so DashVue can work out how much is genuinely available to eBay and warn you when that number gets too low.
How available to eBay is calculated
For any SKU you mark as multichannel, DashVue calculates:
Available to eBay = stock, minus reserved.
“Stock” is the quantity you hold and record in DashVue. “Reserved” is the number of units you set aside because they are earmarked for sale on another channel rather than on eBay. The difference is what DashVue treats as genuinely free to sell through your eBay listing, and it is what the overselling guard checks against.
Setting up a SKU as multichannel
- Open the overselling guard at /overselling.
- Find the SKU that you also sell on another channel.
- Mark the SKU as multichannel.
- Enter the number of units you want reserved for that other channel.
- Confirm the entry to save it.
Once a SKU is set up this way, DashVue reduces the available to eBay figure by the reserved amount and watches it. If the available quantity for that SKU gets too low, DashVue will warn you so you can act before the eBay listing oversells, for example by lowering the eBay quantity yourself or topping up stock.
The honest limit: DashVue warns, it does not auto-sync
DashVue cannot see your other channels
DashVue has no visibility into your other marketplaces, so it cannot see when a sale actually happens on them or automatically adjust your reserved figure or your eBay listing’s quantity in response. The overselling guard only works from the numbers you tell it: the stock you hold and the units you reserve. It warns you when available to eBay looks too low, but it does not sync quantities anywhere, and it never writes stock quantity back to your eBay listing on your behalf.
In practice, this means the guard is only as accurate as the reserved figure you keep up to date. If you make a sale on another channel, you need to update the reserved units for that SKU yourself so the warning stays meaningful. Think of it as an early warning system built on numbers you maintain, not an automatic stock sync between eBay and your other channels.
See the related articles below for more on managing your inventory and costs.
Last updated 2026-07-04.
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