Credit card checksum error

Nancy Beaton's Avatar

Nancy Beaton

Aug 20, 2013 @ 06:19 PM

I have been trying to enter someones cc info but i keep getting message saying seems to contain an invalid checksum, what does this mean, i have rechecked the number with the client, help please and thx

  1. 1 Posted by Dean on Aug 20, 2013 @ 09:14 PM

    Dean's Avatar

    Hi Nancy,

    The checksum is a simple validation tool using the Luhn algorithm to determine the authenticity of a card. It's used to mostly detect human error during the exchange of cc numbers. Really all I can say is that if the validation is failing, either the number is incorrect or there was some kind of error inputing it.

    Best,
    Dean

  2. Jess Pendley closed this discussion on Nov 21, 2013 @ 07:47 PM.

Discussions are closed to public comments.
If you need help with Cheddar please start a new discussion.

Keyboard shortcuts

Generic

? Show this help
ESC Blurs the current field

Comment Form

r Focus the comment reply box
^ + ↩ Submit the comment

You can use Command ⌘ instead of Control ^ on Mac