1. You are a new patient ​ 2. You are moving or traveling 3. Another pharmacy may have received your prescription by mistake 4. Urgent or Emergency use cases 5. A prescribed medication is needed IMMEDIATELY and is ONLY available at one pharmacy. 6. Other extenuating circumstances

The short answer is that it saves everyone time. A user can input their prescription numbers, any questions/comments, and allow the pharmacy to respond to your request(s) in one setting. This increases efficiency and decreases the amount of time it takes to process prescriptions. It saves on paper, eliminates phone calls, and an unnecessary trip to town.