I tried the following syntax and neither worked:
Database Server: serverName[\BSA87]
Database Server: serverName;instanceName=BSA87
I think that using the server name and port number should suffice
1433 if it is the default instance. or the specific port that the named instance is using
enter only server name
Database Server: <server name or IP>
Thanks Jim! I had to go into SQL Server Configuration Manager and check out the TCP/IP properties of my instance and get the port it was using for my instance, in this case 52300. Using the port and not the instance name worked perfectly. Cheers!