Error 1360 when using 'Notify by email'

If you see a red error message saying 'error 1360' (see below) when you save an item and have used the 'notify by email' option during the creation/edit of the item then this caused by not selecting any recipients for the notification.

If 'notify by email' is selected then you must either select 'notify all users' or actually select specific users by pressing the green 'Select' button. See below.

If you see the error message then no email has been sent so you will need to go back to the item in question and use the 'SHARE' function (button at the top right of the screen).