VOID an AUTH_ONLY transaction developer account (PHP)

[haidi]

Without using the PHP SDK how do you void an AUTH_ONLY transaction in a developer sandbox account? 

I have these parameters set.

x_delim_data	TRUE
x_delim_char	|
x_relay_response	FALSE
x_url	FALSE
x_version	3.1
x_method	CC
x_type	VOID
x_login	4YTh7w4haS
x_tran_key	xxxxx
x_card_num	5431111111111111
x_exp_date	01/2014
x_amount	0
x_invoice_num
x_tax	0
x_card_code	123
x_first_name	John
x_last_name	Doe
x_test_request	true
x_trans_id	2201616029

I got the idea of x_test_request here . Do I need any additional/special parameters in order for this to work?

Thanks!

[RaynorC1emen7]

here is the Minimum required field by transaction type.

http://developer.authorize.net/guides/AIM/wwhelp/wwhimpl/common/html/wwhelp.htm#context=AIM&file=A_T...

only send x_test_request = true on a test. It will not do anything on authorize.net other than validation.