A veterinary assistant needs to update the controlled substance log because the veterinarian had to administer some diazepam to a patient for a surgical procedure. He enters the following information into the log: diazepam, 2 mg, 2 tablets dispensed, 80 tablets on hand. He also records the client’s name and address, along with the patient’s name and species, and then signs the log to verify that he dispensed the medication to the veterinarian. What information did the veterinary assistant forget to enter into the controlled substance log?