Hi Jenilyn,
We got SSO EPM-in to work using SAP NW SS0 2.0
NW SSO 2.0 will require a seperate license - please contact your SAP account manager for more information.
NW SSO 2.0 basically allows SSO for GUI and web html access. Because the EPM-addin for EXCEL uses an HTML connection, you will need to implement NW SS0 2.0.
(Hence all the links on this thread point o NW SSO 2.0 documentation.)
Let me know if you have further questions...
Kind Regards,
chris