Open sales order report with billing date.
I want to know if there's an available report for open sales order with billing date field.
If your case is "Order-related" Billing,you can use the T.Code "VF04" for this purpose.
One more way is to go for a custom report.
Make a copy of code of the T.Code "VA05n"(Program Name is "SD_SALES_ORDERS_VIEW").
Change the code as per your requirement to display the field "Billing Date" in the report.
Check with your ABAPer if you wish to go for a custom report.