What is error 1413 and how to get rid of it ?

my ipod 7th gen doesnt allow me to listen to music. so i synced the ipod to itunes but its says "cannot be synced. you do not have enough access priviledges for this operation". so i then restored my ipod but it didnt allow me to it said "could not be restored a unknown error occured (1413) What do i do ?