hi, in my case the following worked for me, I put it with the Code Snippet plugin …
if( function_exists('acf_add_options_page') ) {
acf_add_options_sub_page(array(
'page_title' => 'Donde comprar',
'menu_title' => 'Donde comprar',
'parent' => 'edit.php?post_type=diaril_sa',
));
}