You can change the unit price on the line. The net amount automatically changes accordingly, for example in case of a discount.

Standard procedure

1.	Go to Accounts payable > Purchase orders > All purchase orders.
2.	In the list, select the desired record.
3.	Click Edit, if the purchase order is in view mode.
4.	In the Unit price field, change to the desired amount.
5.	Close the page.
6.	Go to Default dashboard.