How to club many sales orders in to one single invoice document number

Question

Dear Team,
We are in to contract for 12 years with our client for a particular service,so we will raise a contract order for a particular item,with this we generate the order number,here we are generating some 150 orders numbers,this 150 order number I want to combine in to one single invoice document number,I have tried this in vf01 I am giving the all 150 document numbers,and excuting this but here for each sales order document number it is creating one billing document number,but I need one single invoice number for all this order numbers.
My copy controls are
In VTFA
Header data
Sales doc type-                                 zabc
Target billing tye-                            zmv
Copy requirement-                           001 header/order related
Determination export data-               blank
Assignment number-                         b
Reference number-                            b
Copy item number-                            tick box was selected
Item category
Copy requirements-                        Item/order related
Data vbrk/vbrp-                              003  single invoice
Billing quantity                               A
Pos/neg                                            +
Pricing type                                      c
Pricing type exchange rate              blank
Price source                                     blank
Can any one guide what to do

Answer 1

Hi
In VTFA, please do the following changes,and then test by creating the sales orders then do collective billing.
Keep Assignment number blank
Keep Reference number blank
Copy item number- Uncheck the box where tick box was selected
Also make sure that PO Number in sales order is same
Regards
Srinath