WorldPay SecureNet  (real-time) Response Codes:

Transaction Responses   

Code	Type	Message	CSI Pay Code
	Good	SUCCESS	A01
	Hard	INVALID_EXPIRATION	D02
	Hard	UNSUPPORTED_CARD	D05
	Soft	DECLINE_CVV	D08
	Soft	COMMUNICATION_ERROR	D12
	Hard	AUTHENTICATION_ERROR	D27

AVS Responses   

Code	Message	CSI Pay Code
R		00
C		40
I		40
0		40
U		40
P		43
E		45
N		45
Z		47
T		47
W		47
B		4D
A		4D
X		4F
D		4F
Y		4F
F		4F
H		53
K		5C
J		5F
L		70
Q		73
V		7C
G		80
S		80

CSC Responses   

Code	Message	CSI Pay Code
Y		M
M		M
N		N
P		P
0		S
S		S
U		U