What is missing from this jounal entry?

QS 4-5 (Algo) Recording purchases, returns, and discounts taken LO P1 Prepare journal entries to record each of the following transactions of a merchandising company. The company uses a perpetual inventory system and the gross method. November 5 purchased 500 units of product at a cost of $20 per unit. Terms of the sale are 3/10,n/60; the involce dated November 5 . November 7 Returned 45 defective units from the November 5 purchase and received full credit. November 15 Paid the amount due from the November 5 purchase, minus the return on November 7