A
AdyenAdyen 4
Acquirer Error
Technical
System or connectivity issues
Retryable
This decline may succeed on retry
Description
The transaction did not go through due to an error on the acquirer's end.
Recommended Action
Retry the transaction. The error is on the acquiring side, not the customer.
Common Causes
- Acquirer system issue or timeout
- Network connectivity problem between Adyen and acquirer
Recovery Tips
- Automatic retry after a short delay
- If persistent, contact Adyen support
Quick Reference
Code
4
Category
Technical
Retryable
Yes
Source
Adyen
Related Decline Codes
2Retryable
Refused
The transaction was refused by the issuer without additional information.
3Retryable
Referral
The issuer requires a referral — typically a voice authorisation or manual review.
7Retryable
Invalid Amount
An amount mismatch occurred during the transaction process.
9Retryable
Issuer Unavailable
It was not possible to contact the shopper's bank to authorise the transaction.
Adyen 4 recovery
Recover more payments like Adyen 4
Slicker handles codes like 4 by combining decline reason, issuer behavior, BIN data, and timing signals to choose the next best recovery action.
Analyze this in our payment data