Inventory
The quantity confirmed by the central system is the operation's reference. Connector sends this quantity to compatible channels and follows whether the update was accepted.
When a sale happens
When a channel reports a sale, Connector records the order and sends it to the central system. After the order is created and the central system confirms the new quantity, that quantity becomes the new reference for all channels.
This prevents the same sale from reducing inventory twice.
When the central system is unavailable
The order remains saved in Connector and waits to be sent. The last confirmed quantity remains identified as such. When the connection returns, Connector continues eligible orders and checks inventory again.
Inventory managed by the marketplace
Some shipping programs have inventory managed by the marketplace itself. In those cases, Connector does not replace that quantity as if it were managed by the central system. The dashboard shows the situation when it needs special handling.