Ka taea e te OEM te whakaiti i ngā utu whakaputa me te karo i ngā haumitanga koretake. Ko te painga utu kitea o te OEM ko te kaha whakaputa o nāianei o te kaiwhakarato, te mahi ōhanga, te hanganga mātauranga whānui hei whakapai ake i te pai o te whakaputa, me ētahi atu taipitopito tukatuka ngaio. Mā te whakaiti i ngā utu whakaputa i tēnei ara, ka taea e ngā umanga te pupuri i te painga utu whakataetae i roto i te whakataetae nui, engari ka whakapiki ake hoki i te hua ōhanga o ngā umanga.