*** RETURNS API BELOW ***
Array
(
    [code] => 0
    [status_code] => 
    [status_msg] => 
    [sign] => 15c425de936f5f9ab0cc3374bab8467a99212ab6dbee963251e09d02f21c004167f9820b4794ff26a99b9febbdf4b5449fb65a3cd2ddbdd3f6400005b8bbfb88
    [version] => 2.0.0
    [msg] => ok
    [time_stamp] => 2025-04-04T05:37:25.616418+08:00
    [data] => Array
        (
            [nonce_str] => 
            [err_msg] => error param ('refund_fee' ).
            [result] => FAIL
            [err_code] => KSHER_INVALID_PARAM
        )

)
mch_order_no ksher_order_no