I am unable to add the callback URL to my developer account
The callback URL you add has to be an ‘https’ endpoint, and you won’t be able to add an ‘http’ endpoint. Please ensure that you have SSL setup before adding the callback URL
For guidelines on properly setting up your callback URL, please refer here.
What is request ID parameter in the deep link schema ?
Request ID corresponds to a unique identifier that you can set from your end while initiating any verification request. Once users give their consent for sharing the profile information with your mobile web app, we share the same request ID to you along with the access token on your callback URL. This can be used as a request correlation for mapping.
The request ID parameter needs to be a URL safe string with a length of minimum 8 characters and a maximum of 64 characters