This part of ISO 21549 is applicable to situations in which such data are recorded on or transported by patient healthcards compliant with the physical dimensions of ID-1 cards defined by ISO 7810. This part of ISO 21549 specifies the basic structure of the data contained within the medication data object, but does not specify or mandate particular data-sets for storage on devices. The purpose of this part of ISO 21549 is for cards to provide information to other health professionals and to the patient or to their non-professional care giver. It may also be used to carry a new prescription from the prescriber to the dispenser/pharmacy in the design of its sets.