The auto-populated Unit Price (default rate) for an item in the purchase transactions (e.g. Purchase Order, Vendor Bill, Vendor Credit) is derived based on this hierarchy:
1. Purchase Price of the Vendor as set in the Item record (If Multiple Vendors feature is enabled in the account)
2. Purchase Price as set in the Purchasing/Inventory tab of Item record3. Last Purchase Price used in any purchase transaction type
a. Based on Transaction Date not Date Created
b. Per Subsidiary (for OneWorld accounts)