SSO error message when publishing a BI 7.0 report to the NW04s Portal

Please indicate how to resolve the following SSO error message received when publishing a BI 7.0 report from Query Designer to a PCD folder on a NW04s Portal:

Java system error: call FM RSRD_X_MAP_TO_PRTL_USERS_PROXY to ProgId (server alias)_PORTAL_ABV on host (server alias) with SSO not authorized: Authentication f