function filter_acf_selection_by_ownership( $args, $field, $post ) {

    	$user = get_current_user_id();

        if(get_current_user_role() != 'administrator' || get_current_user_role() != 'editor'):
        	$args['author'] = $user;
        endif;


        return $args;
    }

    // Post Object
    add_filter('acf/fields/post_object/query', 'filter_acf_selection_by_ownership', 10, 3);

    // Relationship
    add_filter('acf/fields/relationship/query', 'filter_acf_selection_by_ownership', 10, 3);