Print transaction for a SD invoice (VA01 --> VF01)

Hi there,

I'm working with IS-U, but for some invoices I have to use some SD tranactions. I created billing documents with VA01 and VF01 and got a doc number 100000000332. How can I bill, invoice and print this document? I found a SD transaction list on the internet, but not the right codes.

Grt. Jeroen