A
Authorize.netAuthorize 6
Invalid Credit Card Number
Hard Decline
Permanent failures that should not be retried
Do Not Retry
Retry will not succeed
Description
The credit card number provided is invalid. The number did not pass basic validation checks.
Recommended Action
Ask the customer to re-enter their card number or use a different card.
Common Causes
- Typo in the card number
- Card number does not pass Luhn check
- Invalid card number length
Recovery Tips
- Implement client-side Luhn validation
- Send a dunning email asking the customer to update their payment method
Quick Reference
Code
6
Category
Hard Decline
Retryable
No
Source
Authorize
Related Decline Codes
4Non-Retryable
Pick Up Card
The issuer has flagged this card for pickup. This typically indicates the card has been reported lost, stolen, or is associated with fraud.
5Non-Retryable
Invalid Amount
The transaction amount is invalid. A valid numeric amount is required.
7Non-Retryable
Invalid Expiration Date
The credit card expiration date format is invalid.
8Non-Retryable
Expired Card
The credit card has expired. The expiration date on file is in the past.
Authorize 6 recovery
Recover more payments like Authorize 6
Slicker handles codes like 6 by combining decline reason, issuer behavior, BIN data, and timing signals to choose the next best recovery action.
Analyze this in our payment data