A
Authorize.netAuthorize 251
Fraud Detection Suite Decline
Fraud/Security
Suspected fraudulent activity or security blocks
Do Not Retry
Retry will not succeed
Description
The transaction was declined as a result of triggering one or more Fraud Detection Suite (FDS) filters.
Recommended Action
Review the FDS filter that triggered the decline. Adjust filter settings if needed.
Common Causes
- Transaction matched one or more FDS filter rules
- High-risk transaction characteristics
- IP, shipping, or velocity filters triggered
Recovery Tips
- Review and tune your FDS filter settings in the Merchant Interface
- Use FDS in report-only mode initially to test filter accuracy
Quick Reference
Code
251
Category
Fraud/Security
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.
6Non-Retryable
Invalid Credit Card Number
The credit card number provided is invalid. The number did not pass basic validation checks.
7Non-Retryable
Invalid Expiration Date
The credit card expiration date format is invalid.
Authorize 251 recovery
Recover more payments like Authorize 251
Slicker handles codes like 251 by combining decline reason, issuer behavior, BIN data, and timing signals to choose the next best recovery action.
Analyze this in our payment data