When you create a bill, you are prompted to enter Party Name & period.
All credit G.R.'s of the selected period, which are to be charged from the
selected party shall appear in bill details.
Mass generation of bills is also possible. The option for mass generation of
bills is available in 'F5: Others' button of bottom button bar of the
'Freight Bills' module.
Note:
Reference numbers are automatically generated for these invoices even if
'No' is specified against 'Bill wise Adjustment Required' prompt in F.A.
master of relevant party A/c