adding card number to complete purchase

[MOS21]

what is csc

[kernowlass · Accepted solution]

@MOS21 

Normally its the last 3 or 4 numbers on the back of the card that has a space between it from the other numbers at the end.

https://www.creditcardinsider.com/blog/what-is-a-credit-card-cvv-number-where-to-find-your-security-...