Why aren’t my fields saving?

The most common reason for fields not saving is because a post type uses the default WordPress “custom fields” meta box. This meta box actually duplicates the inputs used by your fields.

If you are registering a post type, make sure custom-fields is not in the “supports” array.

To remove the custom-fields meta box from a WordPress default post type, or one that is registered by another plugin, use remove_post_type_support().

This code should go in your theme’s functions.php file, or your plugin file.

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