R/3 and Portal System connection error

Hi All,

I have created a system to connect portal and dedicated R/3

Connector:

Application:xyz.abc.com

Gateway Host: Blank

SAP Clinet:300

SID:BCD

SAP System Number:20

Server Port: i have given 8020 (my doubt is is it 3220) correct me which one is correct

System Type:SAP_R3

User Management:

Authentication Ticket Type: select

Logon Method: UIDPW

User Mapping Type:admin,user

If i test the connection i am getting following error:

Retrieval of default alias successful

Connection failed: Make sure user mapping is set correctly and all connection properties are correct

Where am i going wrong

Regards,

Murali