If you have to extend the backend product grid of Woocommerce by an custom attribute , you have to follow the steps below to add product attribute columns to Woocommerce backend grid: Register and sort  the new columns via a filter hook (‘manage_edit-product_columns’): <?php add_filter( ‘manage_edit-product_columns’, ‘add_columns_to_product_grid’, 10, 1 ); const BACKEND_PRODUCT_GRID_FIELD_SORTORDER = [ ‘cb’, ‘thumb’, ‘name’, […]