Create a Contact Through the Other Relationships Link from a Vendor Record

-Answer:

Currently, the Contact record is not one among the lists of entities that may be created from a vendor through the Other Relationships link.  This is discussed under Enhancement 133115: Lists > Relationships > Contacts > edit a contact > Info tab > Other Relationships – have the ability to convert a contact to a vendor

An alternate solution to create a contact from a vendor record through the Other Relationships link is to enable the preference: Show Individuals as Contacts under Setup>Company>General Preference.

The above solution would only work if the Entity Type = Individual prior to saving the newly created entity record or existing records may still create a related Contact record through an edit and save process.

Note:

The solution also applies to other record types like Partner and Customer records.