To return an old unit to a supplier you do the following:
Go into Parts > Return Old Units > Old Unit Stock List.
Check the part to be returned is sat in the 'Old units stock list'- example shown below.
On the Return Old Units main window select the 'Return Old Units' option. The below window will appear:
Enter the following details:
Supplier details
Part number
Quantity to Return
Select Add and the details will appear in the Returns Note Details box.
Once all parts have been selected for return select the Complete option.