How Can I Include Activities From Multiple Contracts on One Invoice?

You can combine posting level activities from different contracts on the same invoice by assigning the same invoice group to each posting level activity. If the same invoice group is assigned, a cross reference number is added to each posting level activity even if the activities are within different contracts. The cross reference number is added when you run invoice print and interface, so all contracts with activities assigned to the same invoice group must be run at the same time.

The cross reference number can be printed on the custom invoice layout. You can also use third party invoicing software to combine all billed activities with the same cross reference number and print them on the same invoice.