Dodirect Payment integration Error 10548 in php

[sivapictus]

Hi Friends,

i am integrating direct credit card payment for my website, i created sandbox business pro account and used. But am always get below error.  please help me to solve this error thanks.

[TIMESTAMP] => 2018-05-09T13:44:54Z
    [CORRELATIONID] => 5ddb1a1d35548
    [ACK] => Failure
    [VERSION] => 204
    [BUILD] => 39949200
    [L_ERRORCODE0] => 10548
    [L_SHORTMESSAGE0] => Invalid Configuration
    [L_LONGMESSAGE0] => This transaction cannot be processed. The merchant's account is not able to process transactions.
    [L_SEVERITYCODE0] => Error
    [AMT] => 100.00
    [CURRENCYCODE] => USD
    [ERRORS] => Array
        (
            [0] => Array
                (
                    [L_ERRORCODE] => 10548
                    [L_SHORTMESSAGE] => Invalid Configuration
                    [L_LONGMESSAGE] => This transaction cannot be processed. The merchant's account is not able to process transactions.
                    [L_SEVERITYCODE] => Error
                )

        )