Final answer:
When completing the first step in filling a prescription, the doctor's prescription and the patient's information need to match up.
Step-by-step explanation:
The subject of this question is Medicine and the grade is High School.
When completing the first step in filling a prescription, it is important that the doctor's prescription and the patient's information match up.
For example, if the prescription specifies a certain medication and dosage, the pharmacist needs to ensure that the medication label matches the information on the prescription and is appropriate for the patient.