Create DB2 Connection in Transaction DBCO

Hi Gurus

I am trying to set-up a DB2 connection in Transaction DBCO

But I'm not sure of the parameters that I'm required to enter. I've located a few notes on the subject but even with this guidance the connection is failing.

I know that I need SSID,

But what about the correct parameters for Host, Schema, Database Name, Port...anything else.

My main issue appears to be the correct entry for the required parameters, example, should Host be "SAPDBHOST" or "DB2_DB_HOST" this issue I'm facing with all of the parameters I'm trying to use.

Would anyone have a definitive set of values that I should be using,

Many Thanks

Panduranga