12-06-2013 02:25 AM
Hello @Debaprasad2013
It is not possible to approve a device registration request through code. As a security feature, an account owner or administrator must login to the merchant interface and approve the registration request before it can be used. This is true for both the sandbox and production payment gateway.
You can log into the sandbox merchant interface here: http://sandbox.authorize.net.
Richard
12-06-2013 05:22 AM