WooCommerce SKU characters limit
There is not really a limit as it's stored in WordPress wp_postmeta database table in meta_value column which limitation is 'long text' corresponding to 4GiB (2^32 - 1) characters (see below).
There is not really a limit as it's stored in WordPress wp_postmeta database table in meta_value column which limitation is 'long text' corresponding to 4GiB (2^32 - 1) characters (see below).