public function create_order_note( $order_id, $data ) {
		try {
			if ( ! isset( $data['order_note'] ) ) {
				throw new WC_API_Exception( 'woocommerce_api_missing_order_note_data', sprintf( __( 'No %1$s data specified to create %1$s', 'woocommerce' ), 'order_note' ), 400 );
			}

			$data = $data['order_note'];

			// permission check
			if ( ! current_user_can( 'publish_shop_orders' ) ) {
				throw new WC_API_Exception( 'woocommerce_api_user_cannot_create_order_note', __( 'You do not have permission to create order notes', 'woocommerce' ), 401 );
			}

			$order_id = $this->validate_request( $order_id, $this->post_type, 'edit' );

			if ( is_wp_error( $order_id ) ) {
				return $order_id;
			}

			$order = wc_get_order( $order_id );

			$data = apply_filters( 'woocommerce_api_create_order_note_data', $data, $order_id, $this );

			// note content is required
			if ( ! isset( $data['note'] ) ) {
				throw new WC_API_Exception( 'woocommerce_api_invalid_order_note', __( 'Order note is required', 'woocommerce' ), 400 );
			}

			$is_customer_note = ( isset( $data['customer_note'] ) && true === $data['customer_note'] );

			// create the note
			$note_id = $order->add_order_note( $data['note'], $is_customer_note );

			if ( ! $note_id ) {
				throw new WC_API_Exception( 'woocommerce_api_cannot_create_order_note', __( 'Cannot create order note, please try again.', 'woocommerce' ), 500 );
			}

			// HTTP 201 Created
			$this->server->send_status( 201 );

			do_action( 'woocommerce_api_create_order_note', $note_id, $order_id, $this );

			return $this->get_order_note( $order->get_id(), $note_id );
		} catch ( WC_Data_Exception $e ) {
			return new WP_Error( $e->getErrorCode(), $e->getMessage(), array( 'status' => 400 ) );
		} catch ( WC_API_Exception $e ) {
			return new WP_Error( $e->getErrorCode(), $e->getMessage(), array( 'status' => $e->getCode() ) );
		}
	}