Set up billing rules on the contract to control which project transactions are included in invoices.

This ensures that only valid and approved transactions are posted for billing.

Standard procedure

1.	Go to Project management and accounting > Projects > Project contracts.
2.	In the list, find and select the desired record.
3.	In the list, click the link in the selected row.
4.	Click Add.
5.	In the Line type field, select an option.
6.	In the Description field, type a value.
7.	Expand the Project section.
8.	In the list, mark the selected row.
9.	Click Add.
10.	Click Chargeable categories.
11.	In the list, find and select the desired record.
12.	Click Add.
13.	Close the page.
14.	Click Save.
15.	Close the page.