Portal content for SAP SRM User Interface Add on 1.0 is delivered as part of standard SRM Business Package (BP) and there is no separate BP for SSPUX Add on 1.0.
Customers already using SRM BP software component, need to upgrade SP as given below.
For SRM 70 : Upgrade to Business Package BP SRM 7.0 SP13 or above
For SRM 701 : Upgrade to Business Package BP SRM 701 SP09 or above
For SRM 702 : Upgrade to Business Package BP SRM 702 SP05 or above
For customers who are on lower SP's and do not want to Upgrade SP, can implement manual steps attached in Note 1771480.
Customers can refer to Note 1771480 for more information on Portal content for SSPUX Add on 1.0.