On a work order header, you can edit these fields:
Delivery address
Contact for the work order
Business object connected to the work order
Steps
Go to Work order project planning > Work orders > All work orders.
In the list, click the link for the selected work order.
In the Delivery name field, enter or select a value.
In the Contact field, enter or select a value.
In the Business object field, enter or select a value.
Click Save.