What does error 14 mean? Thaabit Mollagee March 03, 2016 08:05 Updated Follow Error 14 means invalid card number and the card holder would need to insert the card number correctly. Related articles What does error code 4 mean? What does Error Code 4019 mean? What is 3D Secure and how does it protect me against fraud? Where do I find a list of bank error codes? Comments 0 comments Please sign in to leave a comment.