Sitemap - exclude a custom post type

sitemap-exclude-post-type.php

<?php
/*
Plugin Name: Sitemap - exclude a custom post type
Plugin URI: https://wpza.net/how-to-exclude-post-types-from-wp-sitemap-xml-in-wordpress/
Description: Exclude a specific custom post type from the WordPress sitemaps.
Version: 0.1
Author: Damien Carbery
Author URI: https://www.damiencarbery.com
*/


function dcwd_remove_cpt_from_wp_sitemap( $post_types ) {
     unset( $post_types['cust_post_type'] );
     return $post_types;
}
add_filter( 'wp_sitemaps_post_types', 'dcwd_remove_cpt_from_wp_sitemap' );


// Can also exclude specific posts: https://wpza.net/removing-specific-posts-from-wp-sitemap-xml-in-wordpress/