1.if v wanna hire person,instead f hiring action will the system allow us 2 do promotion 4 hiring?how the system knows? 2.in 1IT,cost center field will b there.if a position is assigned to X cost center, organizational unit is assigned to A cost center, then which 1get displayed in 1IT? 3.if v wanna do retro active a/c for a particular employee,other than control record where v can do that n How the system knows retro active a/c? 4.Difference between processing, cumulation and evaluation classes? 5.how Integration switch PLOGI works? 6.what Features do in SAP?how they works? 7.Process model?