Vendor Lead Time - Tagging Item with Vendor

 

Hi

We would like to tag the vendor lead time. So when i generate a Purchase order it should generate the delivery date automatically based on the lead time.

Ex : 

Vendor                            LeadTime

ABC                                    15 Days

If po is generated on 01-07-10 then the Delivery date should come automatically as 16-07-10.

We want to fix the Item list with the Vendor so the user cannot raise a PO with the Item which is not tagged with that Vendor and how to configure the same or restrict the same.

Thanks