Use the fastest supplier when no supplier can ship on time
The method to find the best product supplier return no supplier when there is no supplier that can ship on time. So purchase requests are created without any supplier. On large system convert those purchase request in purchase takes a lot of time as user has to fill a supplier for each request. But if the product has some suppliers defined, it is very likely that user will choose from an existing supplier and accept the delay. So we can reduce the user work by choosing for him, the fastest supplier to minimize the delay.