public static function remove_order_item() {
		check_ajax_referer( 'order-item', 'security' );

		if ( ! current_user_can( 'edit_shop_orders' ) || ! isset( $_POST['order_id'], $_POST['order_item_ids'] ) ) {
			wp_die( -1 );
		}

		$response = array();

		try {
			$order_id = absint( $_POST['order_id'] );
			$order    = wc_get_order( $order_id );

			if ( ! $order ) {
				throw new Exception( __( 'Invalid order', 'woocommerce' ) );
			}

			if ( ! isset( $_POST['order_item_ids'] ) ) {
				throw new Exception( __( 'Invalid items', 'woocommerce' ) );
			}

			$order_item_ids     = wp_unslash( $_POST['order_item_ids'] ); // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
			$items              = ( ! empty( $_POST['items'] ) ) ? wp_unslash( $_POST['items'] ) : ''; // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
			$calculate_tax_args = array(
				'country'  => isset( $_POST['country'] ) ? wc_strtoupper( wc_clean( wp_unslash( $_POST['country'] ) ) ) : '',
				'state'    => isset( $_POST['state'] ) ? wc_strtoupper( wc_clean( wp_unslash( $_POST['state'] ) ) ) : '',
				'postcode' => isset( $_POST['postcode'] ) ? wc_strtoupper( wc_clean( wp_unslash( $_POST['postcode'] ) ) ) : '',
				'city'     => isset( $_POST['city'] ) ? wc_strtoupper( wc_clean( wp_unslash( $_POST['city'] ) ) ) : '',
			);

			if ( ! is_array( $order_item_ids ) && is_numeric( $order_item_ids ) ) {
				$order_item_ids = array( $order_item_ids );
			}

			// If we passed through items it means we need to save first before deleting.
			if ( ! empty( $items ) ) {
				$save_items = array();
				parse_str( $items, $save_items );
				wc_save_order_items( $order->get_id(), $save_items );
			}

			if ( ! empty( $order_item_ids ) ) {
				$order_notes = array();

				foreach ( $order_item_ids as $item_id ) {
					$item_id = absint( $item_id );
					$item    = $order->get_item( $item_id );

					// Before deleting the item, adjust any stock values already reduced.
					if ( $item->is_type( 'line_item' ) ) {
						$changed_stock = wc_maybe_adjust_line_item_product_stock( $item, 0 );

						if ( $changed_stock && ! is_wp_error( $changed_stock ) ) {
							/* translators: %1$s: item name %2$s: stock change */
							$order->add_order_note( sprintf( __( 'Deleted %1$s and adjusted stock (%2$s)', 'woocommerce' ), $item->get_name(), $changed_stock['from'] . '→' . $changed_stock['to'] ), false, true );
						} else {
							/* translators: %s item name. */
							$order->add_order_note( sprintf( __( 'Deleted %s', 'woocommerce' ), $item->get_name() ), false, true );
						}
					}

					wc_delete_order_item( $item_id );
				}
			}

			$order = wc_get_order( $order_id );
			$order->calculate_taxes( $calculate_tax_args );
			$order->calculate_totals( false );

			// Get HTML to return.
			ob_start();
			include 'admin/meta-boxes/views/html-order-items.php';
			$items_html = ob_get_clean();

			ob_start();
			$notes = wc_get_order_notes( array( 'order_id' => $order_id ) );
			include 'admin/meta-boxes/views/html-order-notes.php';
			$notes_html = ob_get_clean();

			wp_send_json_success(
				array(
					'html'       => $items_html,
					'notes_html' => $notes_html,
				)
			);
		} catch ( Exception $e ) {
			wp_send_json_error( array( 'error' => $e->getMessage() ) );
		}

		// wp_send_json_success must be outside the try block not to break phpunit tests.
		wp_send_json_success( $response );
	}