Hi,
You modified your post in the same time I answer. So...
is it possible to trigger the payment of vendors after delivery confirmation by hikamarket interface or it's only possible by paypal interface.
The Vendor payment in HikaMarket is perform thanks to the "Pay" button in the backend (while seeing a vendor details).
At this moment you can select the order to pay and choose the payment method (paypal or manual).
Using "paypal adaptive", when the order is refund in paypal, the money it take back from every recipients ; it is something safe.
If there is a problem with an order or with the vendor, paypal can handle that.
To be honest, when not using Adaptive payment, I really prefer that the payment be made by a human and not using a plugin to make itself a money transaction to the vendor.
Regards,