Reach BO platform 4.1 using RESTful web service atastore

Hi everyone!

I need access to BO platform (4.1 SP2) from Data Services 4.2 (Server).

These are the steps I tried so far:

1) Obtain web service URL from CMC -> Applications -> RESTful Web Services. It is: http://servername:6405/biprws

2) In DS, I go to Datastore -> New -> Datastore type: Web Service REST / Web service URL: http://servername:6405/biprws

3) After clicking Apply, I always get an error:

I've read API reference, DS guide and SDK guide...but I just can't figure it out. Eg: I don't have a clue on what authorization schema is the correct one to choose.

Thanks in advance,

Pablo