Create/Change your Billing types configuration in VOFA.

Some of the IMG stuff are :-

1) To block automatic transfer of the billing document to accounting, mark the field.
    Indicates whether the system blocks automatic transfer of the billing document to 
    accounting.

   During document processing, you can manually transfer blocked billing documents to 
   accounting by selecting:

   Billing -> Change -> Release accounting

2) Account determination procedure

3) Output determination procedure etc. ...

After customizing, use transaction VCHECKVOFA to check your configuration :-

1) Proforma billing types: If it is a proforma billing type, (VBTYP = U), the field must 
    be blank and the account determination procedure must be empty.

2) Cancellation billing document types: : A check is made to see if the cancellation 
    billing document type has the right VBTYP. An F2 invoice, for example, (VBTYP 'M') 
    can only be canceled with billing type S1 with VBTYP 'N' . A billing type with 
    VBTYP '5' can only be canceled with the VBTYP '6' and vice versa.

3) Cancellation billing document type partner functions A check is made to see if the 
    cancellation billing document type partner functions are empty or if those that 
    correspond to the billing type used are empty.

Next, make sure that you maintain the copy control for the Billing Types:

Sales documents in VTFA

       Target               Source
e.g.  F1 - Invoice        OR - Standard Sales Order
        F1 - Invoice      ZOR - Your Sales Order

Billing documents in VTFF
e.g.  G2 - Debit Memo    F1 - Invoice
        G2 - Debit Memo    F2 - Invoice

Deliveries in VTFL 
e.g.  F1 - Invoice       LF - Delivery
       F1 - Invoice      ZOR - Your Delivery

Usually for copy control, you let the rest of the settings remains as SAP defaults.

You only assign the new Billing Document Types.

After that use transaction VCHECKTVCPF to check your Copy control customizing.

Related Topics:
Integration between SD, MM, FI
Link Between SAP SD, MM & FI

SAP SD Books
SAP Sales and Distribution, Certification, Interview Questions Reference Books

SAP Sales and Distribution Tips
SAP SD - Sales/Distribution Tips

Best regards,
SAP Basis, ABAP Programming and Other IMG Stuff
http://www.erpgreat.com