Working with Guixt

Hi gurus, i'm traying to work with SAP Guixt, an d i have the following issue, i'm using transaction SHD0 to make a variant, when i tried to use the new one i get this error: User SAPCPIC has no RFC authorization for function group SHD0. The SAPCPIC user has S_A.CPIC profile, but i can't change the values of that profile to add SHD=. Can some one help me?