Duplicate Contact Records
By default your account is set up to prevent duplicate contacts from being created.
Duplicates are considered to be contacts with matching First Name + Last Name + City + Phone 1 + Email Address. Two contacts may have the same name (Bob Smith for example) so we are looking to make sure they are exactly the same before preventing the addition. Any variation of phone 1, email, name or city will allow the contact to be added.
Landing Pages check for duplicates using the Email Address. If an email matches an email in the system, the Landing Page submission notes and actions will be added to the existing contact.
For more information, we also recommend watching How Do I...Handle Duplicate Contacts.