Contacts are not necessarily linked to another document. They can be stand alone, just a Contact with a First Name not linked to any other document or
Contacts can be linked to a Party, that is either a Customer or a Supplier.
The Contact_ID is automatically created:
1. If only a First Name is entered that First Name defines the ID , thus First name (only)
2. If a First Name and a Party is linked the ID becomes “FirstName-Party”
Contacts can, but do not have to be linked, to: User, Customer, Supplier, and Sales Partner. Since Customers and Addresses are not directly linked to a User, all links go via Contacts.
A Contact can be linked to the (web) user. If that user is also a Customer, it is linked to the Customer by the Customer ID
The Address Title (Name of person or organization that this address belongs to) is a free format unlinked field. The ID is automatically created from the Address Title upper score Address Type. (AdressTitle-AddressType).
### Address Linking
Addresses can be entered individually (unlinked) or linked to customers, leads, suppliers or Sales Partners.
Linking is done in the reference section where the links can be established.