There are 2 settings we can use to set up a network's "Duplicate Case Search" terms:

Strict Mode - Your network is set to identify a possible duplicate IF...
2 cases have the same SSN or,
2 cases have the same DOB within a month or,
2 cases have the same name

Normal Mode - Your network is set to identify a possible duplicate IF...
2 cases have the same SSN, or
2 cases have the same DOB within a month, or
2 cases have the same name, or

2 cases have the same name and address