How to do it

1. Navigate to Settings | Solutions | Packt.
2. Create a new field by clicking on Entity | Contact | Keys | New.
3. In the Key definition dialogue, type Name and Email in the Display Name field.
4. Double-click on the First Name, Last Name, and Email Address fields under Available Attributes:

1. Click on Save and Close.

1. Navigate to contacts and try creating two contacts with the same first name, last name, and e-mail address. You will be prompted with the Duplicate Record error, as shown in the following screenshot: