This exercise has three validation tasks: (Methylphenidate ER 27mg Tab; Outcome – Dispense – no problems with this prescription.); (Acetaminophen / Oxycodone 325 mg-7.5 mg; Outcome – Do Not Dispense; There are no refills allowed on CII prescriptions.); (Amphetamine salts 10 mg Tab; Outcome – Dispense – this prescription can be filled).