A merchant descriptor is the line of copy that identifies transactions on a cardholder’s account activity and statement. It is recommended to write your descriptors clearly, so that it helps cardholders recognize when and where the transaction took place.
Additionally, it is recommended to include contact information within a merchant descriptor. This allows cardholders to contact you in order to learn more about the transaction. Moreover, it is useful to include this as compelling evidence in your dispute response. After all, it shows you took the effort in providing contact details to prevent a dispute.