Question

I am using Authorize.net payment module(AIM) with my cakephp framework. Payment functionality is working fine. Now i need to do a REFUND Functionality with my framework. I checked their Api’s but i could not get any thing. According to their API guide the following parameters are needed If I passed they asking exp date too. In my database we are storing only last 4 digits of CC. any way i try to pass all the 16 digits but the response not proper. Just i need a sample PHP code for Authorize.net Refund.

x_type=CREDIT

x_trans_id=Transaction ID here

x_card_num=Full credit card number or last four digits only here

I am passing following parameters

        "x_type"                => 'CREDIT',

        "x_trans_id"            => $x_trans_id,

        "x_card_num"            => '4111111111111111',

       "x_exp_date"            => '' ,

        "x_amount"                => $x_amount,

        'x_test_request' => TRUE 

Now I getting the following error message :

(TESTMODE) A valid referenced transaction ID is required.

Answer 1

Even though an expiration date is not required, it seems that you still need to pass the key because it’s in the list of required Authorize.net keys. Just pass x_exp_date => '' and you should be good!