An issue number to the account number is featured on certain debit cards, primarily United Kingdom ones such as Switch and Maestro as well as German girocards.

What is my issue number?

The issue number is always found on the front of a credit card or debit card. There is some really bad advice out there that confuses the 3 digit CVV/CVC number on the back with the issue number.

What means issue number?

The purpose of the issue number is for identification and for protection when you use your credit card for transactions, especially when online. When you are prompted to provide the issue number or CVV, CVC or CID, doing so proves that you are actually present at the time of the transaction.