Hi Siri H,

You may be able to use other fields on the table to help.  For example, "if(invoice_num = "","Unbilled","Billed") and save it as a formula called "Source."  You will need to test different fields out to achieve the results you are looking for.  Let me know if you have any questions.

Thanks,

John DiCostanzo

Managing Partner | Nexus Consulting LLC

THANK YOU!!!  Invoice number was not in the table, but "generation date" was, and that field is not populated on unbilled records.  I really appreciate your help.  Thank you!!