A discount card is a tool that enables a consumer or members of a discount club to receive a discount at retail outlets, subject to the rules for using discount cards. As a rule, a discount card works in conjunction with some kind of discount.
Activation of discount cards in the system is carried out in the "Discounts" section, under the option "Discount card number".
After activation, the "Discount card" field will be available in the customer card.
Using API, you can enter/read the card number in the customer card, as well as search for a customer by the card number.
It is also possible to interact with the field using the trigger.