Default Category

Hello @rneo83,

You can use the following code to set the default product category:

add_action( 'product_edit_save', 'my_default_product_category' );

function my_default_product_category( $post ) {
   if ( 'publish' === $post->post_status ) {
      $default_category = 'my-default-category-slug';
      $terms = wp_get_post_terms( $post->ID, 'al_product-cat' );
      if ( empty( $terms ) ) {
         wp_set_object_terms( $post->ID, $default_category, 'al_product-cat' );
      }
   }
}

You should replace my-default-category-slug with your selected category slug.