If there is a situation where the Easy Sign Iframe may have been loaded for a signer, and the signer didn't sign... you can reload the same document again for them to sign without having to recreate a new request.
The "uniqueid" parameter will allow you to add an unique id that you can use for up to 60 minutes to load the same document again. It's great when the same signer is procrastinating for one reason or another, and you won't use up all your credits having to recreate the same document over and over again.
Please refer to the Easy Sign documentation for more information. https://sites.google.com/site/docverifyapi/home/easy-sign-system