Choosing SAP roles to be imported in CMC (BO XI 3.1)

Hi!

I was following Ingo instruction to configure SAP Authentication in BO XI 3.1. CMC

/people/ingo.hilgefort/blog/2008/09/19/businessobjects-and-sap--configure-sap-authentication

(by the way, really useful information here!)

and I have a couple of questions:

1. Which roles do I need to import (in order to create connection between SAP BW and Crystal Reports 2008)? I've a lot of them (boe_sec_basic, boe_content_publishers....), is there any guide available about them?

I'm working on BO XI 3.1 and SAP BW

2. What if I select all of the available roles? Could anything go wrong?

Thank you!