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Amex  (real-time) Response Codes:



Transaction Responses   
Code Type Message UniPay Code
0QQ Hard Invalid Credit Card D05
33 Hard Expired card D16
13 Soft Invalid amount D18
61(1) Soft Exceeds withdrawal amount limits D18
25 Hard Unable to locate record on file D27
0Q3 Hard Payment Gateway Connection Error D27
63 Hard Security violation D27
68 Hard Response received too late D27
92 Hard Financial institution not found D27
30 Hard Format error D27
65 Hard Exceeds withdrawal frequency limit D27
???? Hard ???? D27
91 Hard Issuer or switch is inoperative D27
130 Good Additional customer identification required D47