private function GetWSInitialRequest($operation)
	{
		if ($operation == 'FEDummy') {
			return array();
		}

		$ta = $this->afip->GetServiceTA('wsfe');

		return array(
			'Auth' => array( 
				'Token' => $ta->token,
				'Sign' 	=> $ta->sign,
				'Cuit' 	=> $this->afip->CUIT
				)
		);
	}