During a repair operation, all sub units attached in the linked UUT-report will be displayed below the main unit. Here you can add failures to both the main and sub unit, as well as replace any of the linked sub unit.
Click on the "replace button" as highlighted (in red) below to replace a sub unit.
A popup window allow you to type in the new units inventory data (SN, PN, Rev), klick OK.
The GUI will list the old and the new unit. Click "Submit" to submit the report to WATS.
When submitted, the UUR report will list the replacement.