muntlig og skriftlig; ordrebekreftelse (korrekt og innen rimelig tid), tilgjengelig- het, tydelighet, underrette om avvik, endringer (innkjøperens egne synpunkter)
oral and written; order confirmation (correct and within a reasonable time), available-hot, clarity, inform about the discrepancies, changes (innkjøperens own view points)
Oral and written; order confirmation (correct and within a reasonable time), available- het, clarity, under the right on deviation, changes (purchase's own synpunkter)