Root Cause

• Incorrect data format: One or more payment fields (card number, expiration date, CVV) were entered in an invalid or unsupported format.
• Missing mandatory fields: Required payment fields were left blank or incomplete.
• Invalid character usage: Non-numeric characters or special symbols were used in fields that require numeric input.
• Inconsistent formatting across fields: The provided values do not meet the expected formatting standards defined by the payment gateway.

Troubleshooting and Solutions

• Ask the customer to -

  • Verify and ensure all required payment fields (card number, expiration date, CVV) are entered correctly and completely.
  • Use the correct format for each field (e.g., MM/YY for expiration date, 3 or 4 digits for CVV).
  • Avoid using invalid characters or spaces in numeric fields.
  • Retry the transaction after correcting the format of the payment details.

• Implement input validation on the payment form to prevent submission of improperly formatted data.