V
Visa Network Response CodesVisa 51
Insufficient Funds
Soft Decline
Temporary failures that may succeed on retry
Retryable
This decline may succeed on retry
Description
The cardholder's account does not have enough funds to cover the transaction amount. This is one of the most common decline reasons and is typically temporary.
Recommended Action
Retry after a delay, ideally around the cardholder's typical pay cycle. Visa permits up to 15 reattempts over 30 days.
Common Causes
- Account balance is below the transaction amount
- Pending transactions have reduced available balance
- Credit limit reached on credit cards
Recovery Tips
- Retry around common pay dates (1st, 15th of the month)
- Space retries with increasing intervals
- Try a smaller amount if partial payments are supported
- Send a payment reminder to the customer
Quick Reference
Code
51
Category
Soft Decline
Retryable
Yes
Source
Visa
Recoverability verdict
This is a soft decline. This revenue is often recoverable.
Payments failing with code 51 are often recoverable with the right retry timing and routing. Slicker recovers up to 70% of soft declines with smart retries.
Related Decline Codes
01Retryable
Refer to Card Issuer
The issuing bank is requesting the merchant to contact them before proceeding. This is a generic referral code indicating the issuer wants more information or verification.
02Retryable
Refer to Card Issuer (Special Condition)
Similar to code 01 but indicates a special condition. The issuing bank wants the merchant to contact them for a specific reason related to the account.
03Retryable
Invalid Merchant
The merchant ID or terminal configuration is not recognized or not valid for this transaction type. This typically indicates a setup issue rather than a cardholder problem.
05Retryable
Do Not Honor
The issuing bank has declined the transaction without providing a specific reason. This is one of the most common decline codes and can be temporary or permanent depending on the issuer's internal risk assessment.