Can every marketplace connect automatically?

Only where the marketplace provides official or approved API, partner, webhook or feed access.

Can an unmapped SKU change stock?

No. Unmapped SKUs remain quarantined until a product or variant mapping is confirmed.

No. Official marketplace or courier labels are used when an authorised API supplies them; built-in labels are operational fallbacks.

Official API & Authorised Integration Guide

Answers about live marketplace connections, approvals, labels, inventory and automatic sync.

Can every marketplace connect automatically? Only where official/approved API access is available.
Will an unmapped order change stock? No.
Does a failed API push rollback local stock? No; it queues a retry.
Are fallback labels official? No.
Can one account manage multiple companies? Yes, connections are company-scoped.