Code-Snippets-Functions/Execute a function on a child site/WooCommerce/order-number-prefix-suffix.txt

add_filter( 'woocommerce_order_number', 'bbloomer_order_number_prefix', 9999, 2 );
 
function bbloomer_order_number_prefix( $order_id, $order ) {
   return 'Prefix-' . $order_id . '-suffix';
}