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 4019 mean? What does error code 4 mean? What is 3D Secure and how does it protect me against fraud? Comments 0 comments Please sign in to leave a comment.