protected function validate_order() {

		$order_id = $this->get_order_id();

		if ( 'new' === $order_id || 'llms_order' !== get_post_type( $order_id ) ) {
			return $this->error(
				self::E_ORDER_NOT_FOUND,
				__( 'Could not locate an order to confirm.', 'lifterlms' )
			);
		}

		$order = llms_get_post( $order_id );
		if ( ! $order->can_be_confirmed() ) {
			return $this->error(
				self::E_ORDER_NOT_CONFIRMABLE,
				__( 'Could not locate an order to confirm.', 'lifterlms' )
			);
		}

		$this->order = $order;
		return true;

	}