In J 1/03 the Legal Board emphasised the paramount importance of the designation of receiving Offices and the difficulty or even impossibility, in many cases, of correcting wrong or missing designations. Consequently, the benchmark for what "all due care" meant in those cases, was very high. Likewise the check of the content of the international application on the basis of the "Notification of Receipt of Record Copy" issued by the International Bureau had to be made very carefully.