sales order has business partner field on header and product on line level.
In system admin i double checked, both has field type search. so in reference field "Search" is selected. But no Autocomplete active [isActucomplete]. The reason is display logic is for this field. (see attached picture). So autocomplete implemented just for field type String.
Instead we want to use autocomplete also for search field type.
Users are totally disappointed from popup Bparter Info window and autocomplete doesn't work in similar - above - cases