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Hi, Thanks a lot for reply, but may i know that how can i test AVS functions in test mode as it always returns P in AVS error code? Thanks,Dilip

why system always returns P in AVS response and approve my transaction even if i enter any of the zip code listed here : http://developer.authorize.net/tools/errorgenerationguide/.i am sending my transactions to here : https://test.authorize.net/gate...