SAP BW role to read data from BW standard cube and load into BPC cube thru DM package

Dear All,

I am a SAP BPC 10.0 consultant and have the following situation:

I have data at BW STANDARD cube and I am trying to load data from this into BPC cube, thru BPC's data manager package. When I do that, I am getting authorization error. I am not sure what BW roles I miss in this regard.

Pls. let me know what BW roles one should have so that, the user can read data from that BW standard cube.

Thank you,
Peri