Role is the way how authorizations are granted in SAP or the activities which are performed by and individual are restricted. A role consists of all the duties performed by an individual in the organization. For e.g., the clerk or the manager or buyer or dispatcher etc.. Two managers of same cader has same type of duties. Technically a roles contains all the items(transactions or tcodes, reports, links) which are needed by an individual in particular position. In a roles-based authorization system the lattice structure of organization is well defined and the activities performed by each individual is defined clearly. In a role-based authorization system the users are assigned to generiuc roles (technical) which contains tcodes necessary for peforming the job. The above description is a single role.
There are three types of roles.
o Single roles
o Composite roles
o Derived roles