He was assisted by a council of Persians, to which also provincials were admitted and which was controlled by a royal secretary and emissaries of the king, especially the "eye of the king", who made an annual inspection and exercised permanent control.
Para cumprir coas súas funcións contaba coa axuda dun consello de persas, e era controlado polo secretario real e os emisarios do rei, en especial polo funcionario "ollos e oídos do rei", quen facía unha inspección anual e exercía un control permanente.