The bookshop at Seneca College has 1000 copies of intermediate accounting volume one. The copy has a chapter on revenue IAS 18, which was modified the previous semester into IFRS 15 instead of IAS 18. Last semester, students protested to the school that the book caused them to obtain worse grades because they were taught the incorrect standard. It is becoming more evident that the institution should not sell the book. On the other hand, Seneca has mandated that lecturers teach IFRS 15 rather than IAS 18. The updated book, which includes IFRS 15, is accessible in bookstores but is available on other websites such as Amazon and Chapters. The bookstore is unclear whether or not the students will purchase the book. Additionally, the book retailer is no longer permitted to return the book to the author.