If your administrator has enabled organization, person, or contact duplicate prevention, you are warned if the organization, person, or contact that you are creating is a possible duplicate of an existing party. Duplicate prevention applies also to creating organizations or persons as part of creating a new relationship.
You can either:
Continue to create the new organization, person, or contact, or,.
Discard the new organization, person, or contact and continue with the existing one.
You can view the status, and start and end dates of a contact relationship, on personalization.
Status: status of the contact relationship
Start Date: date from which the contact relationship is active
End Date: date till which the contact relationship is active