Making radio button group "User Entered - Required for email submission

[Darquin]

I’m trying to make a radio button group required before the end user is able to submit the form by email.  I’ve selected “User Entered - required” in the value tab for the object, but when I click “submit by email” there is no warning message and the form allows the email submission.  The form also highlights the radio button group like it is required.  Please Help.

[PDFGuru]

Following article may help you:

http://createpdfform.blogspot.in/2015/08/how-to-make-radio-button-group-as.html

[Darquin]

Thank you for your reply it was partially helpful.  The code from the link does give an alert message, but it still allows email submission. The email coding does not tie into an already created submit button.  Does anyone know the code to stop an email submission directly when .mandatory = "error" isn't working?