By default, WooCommerce shows only 20 variations per page on the product edit page. If you want to change the number of variations shown per page in the edit screen, add the below to your child theme’s functions.php.
/* Show more Variations in Admin Product Edit Page */
function wpflt_woo_increase_variations_per_page_admin() {
return 300;
}
add_filter( 'woocommerce_admin_meta_boxes_variations_per_page', 'wpflt_woo_increase_variations_per_page_admin' );The above code will increase the WooCommerce variation limit per page from 20 to 300. (Only for admin on the Product Edit page)
Important: By default, WooCommerce has a limit of 50 variations per product. More variations will only be allowed if you increase the limit. Use this code to increase the Variation limit in WooCommerce.