Event deep link is invalid

Hello, I want to set up an in app event for the coming event in my application. But when I enter the deep link, which is custom URL (i.e. myapp://), error comes out with message "The event deep link entered is invalid".

In the document, it said that the link can be a universal link or custom URL. Do I set something wrong? Or actually custom URL is invalid for in app event?

Replies

I think the form also waits for other fields of link. For example when I tried myapp:// I got the same error message; but it accepted myapp://anevent