If you experience difficulties while registering to the Affiliate Partner Programme at Booking.com/affiliate-program/, you can first try to use a different web browser.
However, please note that the most common reasons for the error notification to be shown can be one of the following cases:
1) When your website domain doesn't adhere to our quality standards. The website domain must :
i) Be live and/or fully functional
ii) Have unique travel related content
iii) Have a steady & high amount of daily visitors for several months
In these instances, your website has not been accepted. In case you'd like to sign up again, we'd kindly recommend you to do so once the website meets our quality standards in terms of visitors and content. When registering again you'll have to use a different email address as the system will not accept a previously used email address.
2) Signed up with a Social Media page (Facebook, LinkedIn, VK etc.), as we do allow for you to sign up with third-party pages.