Gretchen Cilla sells memberships to the Denver Symphony Association in Denver, Colorado. The Symphony’s procedure requires Cilla to write a patron receipt for all memberships sold. The receipt forms are pre numbered. Cilla is having personal financial problems, and she stole $600 received from a customer. To hide her theft, Cilla destroyed the company copy of the receipt that she gave the patron. What will alert manager Sabrina Sims that something is wrong?