On setting default unit costs

The default unit costs are set in this order:

1. Direct entry on document.

2. Item Location (IC12.1) if the company is a standard costing company

3. Last received or invoiced cost

If you manually specify a unit cost on the document, then it will override any other costs for that item. If your company is a standard costing company, then the default unit cost will come from the Item Location (IC12.1). If neither of these is true, then the default cost will come from the last received or invoiced cost. If the item was not received or invoiced, then you must manually specify a cost for that item.