Cancellation of medication orders already sent to the Pharmacy by eRX is only possible with less than 2% of pharmacies. The SCRIPT standard allows for change/cancel and you can possibly send it with the ordering software but less than 2% of pharmacies can receive the order. Therefore for most pharmacies it can only be done by laboriously calling the pharmacy, being put on hold, giving the information and waiting for them to do it. We tell the patient to not fill what was incorrect and let the order expire. It is not optimal.