As a Sales or Purchase Person I make a lot of orders. Some times I may not now the total Name of the Vendor or my customer, Maybe not even the customer no. In such cases I would just type a part of the customer Name and press enter to see the search result and select from it.

Maybe I typed it wrong or I remember the Name or no. again, so I want to leave the search result page and type the customer Name again. Here an error is Always shown, because I haven't selected one yet.

In the past, this behaviour has not been this way. So I would not like to see an error because it is irritating. Only if I try to enter other field without selecting a customer, an Error is OK, because then I know, it is not selected correctly.