Iimbonakalo:
1. Ukuchaneka okuphezulu kobunzima: usebenzisa iseli yomthwalo echanekileyo ephezulu,
2. Ukusebenza ngokufanelekileyo: Ukusebenza okuzenzekelayo ngokupheleleyo, ukutyisa, ukulinganisa kunye nokuhambisa kugqitywe ngesitshixo esinye.Emva kokudityaniswa nenkqubo yokulawula umgca wemveliso, ihambelana nomsebenzi wokuvelisa ngaphandle kokungenelela ngesandla.