I am a newspaper circulation manager and a subscriber just informed us that we aren't allowed to ask for the CVV over the phone or by mail subscriptions. What is the correct procedure?
The subscriber was wrong. From PCI DSS 3.2.1: "The purpose of the card validation code is to protect "card-not-present" transactions—Internet or mail order/telephone order (MO/TO) transactions—where the consumer and the card are not present." You aren't allowed to store the CVV number, but you are expected to enter it into a virtual terminal when processing phone payments, for example.