KB47220: "A Contact with this name already exists" appears when creating a contact using the same name as an address in MicroStrategy Developer 9.4.1 and earlier

SYMPTOM
When creating a contact to link to a Strategy user, using the same name as an address the user already has, the message "A Contact with this name already exists. Please use a different name." appears, as below. And the contact cannot be created.
 

A Contact with this name already exists. Please use a different name.

• Edit user A. Under Deliveries -> Addresses, create an address using the same name as the user, as shown below.
  

• Go to Administration -> Delivery Managers -> Contacts. User A icon appears, with Address A, as shown below.
  

• Navigate to Deliveries -> Contacts. Create a new contact using the same name as the user. The message appears, as shown below, and the contact cannot be created.
  

• Go back to Administration -> Delivery Managers -> Contacts and delete Address A. User A icon remains. Contact A cannot be created due to the same message.
  

CAUSE
With the above steps, a Contact with the same name as the user name will be created which is the user's default contact. This default Contact will show in the Contacts manager with an icon of the User. If the address is deleted by editing the user, or by deleting the Contact in the Contacts manager, the user icon still exists in the Contacts manager. Therefore it is not possible to create a stand alone contact with the same name
 
ACTION
Create a new contact with a different name from the user.