When we assign resource to activity, sometime we can see a carat (^) symbol appear in Price/Unit column.
The carat (^) is displayed when the resource does not have a price/unit assigned.
If resource does not have price/unit, Primavera will use the Project level price/unit which is defined in Project window -> Calculation tab
Now if you define price/unit for the resource like this:
Primavera will now use the price/unit from resource.
However you have to run “Tool -> Recalculate Assignment Costs” to refresh the data.
Click on Recalculate
Now you can see there is no carat (^) symbol in the price/unit and that price is taken from Resource.