post https://event.uniqodo.io/v2/transactions
Register a transaction when an order is completed.
This endpoint should always be called whenever a customer completes an order i.e. transaction. It is mandatory that you perform this operation so that all applied promotions and unique coupon codes can be redeemed and logged against the order. This is also required for awarding loyalty points to customers, fraud monitoring, promotion using order completion limits, triggering other promotions and much more.
You MUST still call this endpoint even if there are no promotions or coupon applied to the order.