If all you have is an invoice number, how do you find the order number?
If you have an invoice number, but no idea what customer this is or what order it is for, there is a way to find out. Go in to order entry. Click the lookup magnifying glass by the order number field and check wildseek under the search by options and click the search button.
A lookup search window will appear with a check mark in invoice number. Key in the invoice number in the search value field and click ok. Your result should appear and can be selected to view.