Description

The payment failed because there is an issue with the card number. This error occurs when the card number has an incorrect length, contains typographical errors, is incomplete, or does not pass validation checks.

Recommended Customer Message

Your payment could not be processed because the card number is invalid. Please verify your card number and try again.

Root Cause

• Incorrect card number length: The entered card number does not meet the required length for the card type (e.g., Visa, MasterCard, Amex).
• Typographical errors: The customer mistyped the card number, leading to missing or extra digits.
• Incomplete card details: The card number entry was submitted before all required digits were entered.
• Invalid card number format: The card number does not pass standard validation checks such as the Luhn algorithm.

Troubleshooting and Solutions

• Verify and re-enter the complete card number carefully, ensuring all digits are correct.
• Ensure the card number matches the expected format and length for the card type.
• Retry the transaction after correcting the card number.
• Ask the customer to contact their card issuer if the correct card number is still being rejected.
• Implement client-side validation to help prevent submission of incomplete or invalid card numbers.