The Creator help files at https://www.zoho.com/creator/help/views/editing-records-via-record-id.html#Invoking_the_url_from_Deluge_Script tell us that the syntax is:
openurl("http://creator.zoho.com/"+zoho.adminuser+"/"+zoho.appname+"/add_contact/record-edit/contact_view/" + input.ID + "/","same window");
However, there are traps for the unwary! "Contact_View" refers to a View that MUST contain the record you are about to edit.
If that View has Conditions on it, and they causes the record in question to not be visible on that View, then you will get a dumb box about 25 pixels square with an X in it. Absolutely NO help!
Further, the Permissions on that View must allow this user to have Edit rights to the record concerned. If not, you get a message to that effect.
I had some code that was working fine until they asked me to put conditions on the View. My script was being executed from a Function.
Saran: Are you monitoring this please?
Cheers