Partially credit the amount

1.	Go to Rental order management > Rental orders > All sub rental orders.
2.	In the list, mark the selected row.
3.	Click Edit rental lines.
4.	In the Rental gross amount field, enter a number.
	Note: If you want it to be a credit then enter an amount less than the original amount
5.	Click OK.
6.	On the Action Pane, click Invoice.
7.	Click Invoice.
8.	In the Number field, type a value.
9.	Select Yes in the Include credits field.
10.	In the Calculation date field, enter a date and time.
	Note: If you want the credit to be for the same period then set the calculation date to the same as the previous invoicing period. On the adjusted line amount the credited amount will appear in negative.
11.	Click Update match status.
12.	Click Post.
13.	Close the page.

Related to	Notes
Credit sub rental orders

Partially credit the amount Task