An ID returned by a previous query to continue clicks retrieval (see lastId in response)

Select your trip. This list only includes future and estimated date trips, and trips which either have no "registration due date" or have a future "registration due date".

Select your trip. This list only includes future and estimated date trips, and trips which either have no "registration due date" or have a future "registration due date".

Select your trip. This list only includes future and estimated date trips, and trips which either have no "registration due date" or have a future "registration due date".

Select your trip. This list only includes future and estimated date trips, and trips which either have no "registration due date" or have a future "registration due date".

This is not required, even if Last Name is required on registrations for your YouLi account

Choose whether to send the YouLi automatic confirmation email(s) to the traveler AND planner(s) of the trip when this registration is added.

If traveler categories are enabled for your account, provide a valid category. Invalid categories will fail. Learn more

Input should contain the full URL. e.g.
https://example.com/path

If left unfilled then the short url returned will have a random alias

Define your custom domain. If left unfilled your short URL will be returned under the Short.fyi domain