Is it possible to send an not existing room through Airbnb, Homeaway, Etc..?
Yes our APIs allow you to send the content to Octorate but also send it to the portal when all the content is ready
My customers are vacation rentals, how should I use Octorate features to send the properties?
We support vacantion rentals through Multiaccount "network" configuration, check our quick start to understand better.
Is is possible to send different content for each portal?
The goal for our services is to provide an unified interface, and section to handle all the information through many portals. So this for room and rates has a limited support. You should send then all the information as shareable by many portals. Regarding the portals and their configuration, we've discovered that the configuration is too much different, we reserved then to copy some data between different connections but you're allowed to send different content for each portal.
How the authentication to the portal is performed?
Actually, if a connection doesn't exists, you're allowed to create it, but the login to the portal has to be done on the Octorate platform by the customer.
Are all the params /request mandatory?
No. Some params are not mandatory and are related only to specific portals. Check the integration guides to understand what kind of params / calls you have to use