Override

If this field is selected, the allocated landed costs have been updated, either automatically or manually. The Allocate Landed Costs activity, if run again, will not re-allocate to this line.

The total landed costs for the overridden lines will be subtracted from the PO total costs (by category) prior to performing any of the amount allocation routines.

If the costs are overridden on a line utilizing the percent allocation method, the Allocate Landed Costs activity will simply ignore the line on subsequent allocations.

Caution: 
Because it is possible to allocate and override the landed costs, you should be aware of possible strange values, such as negative landed costs.