Rozetka Options
A single setting the whole marketplace exchange depends on: portal access, where prices come from, which locations stock is counted across, and exactly how that stock figure is worked out.
Where to find it: Modules → Rozetka → Settings → Rozetka Options
A worked example

The left column is access and commerce: login, password, token with its issue date, the counterparty (a reference field: the module's services do not read it — the module does not download marketplace orders), the currency and the price list prices are taken from.
The right column is stock: a comma-separated list of locations and three mutually exclusive ways to compute the number a buyer will see.
Three ways to count stock
This is the most important part of the setting, because it decides whether you sell something you do not have:
| Option | What reaches the marketplace |
|---|---|
| Stock on hand | everything physically present |
| Less quantity on orders | on hand minus what is already promised to customers |
| Less quantity in reserves | on hand minus reservations |
Plus a minimum stock as insurance: an item counts as available only while more than that threshold remains. The example holds 2, so the last couple of units never show on the marketplace.
Typical situations
The services complain the options are empty. All four exchange services start by reading this setting. The login and password are needed by the three that call Rozetka (category download, item download, "Rozetka Items Update"); "Rozetka Price Stock Update" computes locally and runs without them.
Marketplace prices are wrong. Check the price list field: prices come from there, and from the item card when the price list has no row for the item; the card price is always in the base currency. A zero in the price list is a price, but a zero is never sent to the marketplace: the item keeps its previous price.
You sold something you do not have. Check the counting method: "stock on hand" ignores both orders and reservations.
Where to look next
- Rozetka items — the catalogue being synchronised.
- Price and stock update — the service that applies these rules.