src/Payum/Payex/Api/RecurringApi.php
public function stop(array $parameters)
    {
        $parameters['accountNumber'] = $this->options['account_number'];

        $parameters['hash'] = $this->calculateHash($parameters, array(
            'accountNumber',
            'agreementRef',
        ));

        return $this->call('Stop', $parameters, $this->getPxRecurringWsdl());
    }
public function stop(array $parameters)
    {
        $parameters['accountNumber'] = $this->options['account_number'];

        $parameters['hash'] = $this->calculateHash($parameters, array(
            'accountNumber',
            'agreementRef',
        ));

        return $this->call('Stop', $parameters, $this->getPxRecurringWsdl());
    }
@link http://www.payexpim.com/technical-reference/pxrecurring/pxrecurring-stop/

@param array $parameters

@return array