CurrentInvoiceLine_CreateFromData need handle, id and number

in CurrentInvoiceLine_CreateFromData an Id, a Number and a Handle is needed but I can't seem to figure out which data goes here, it allready have a ProductHandle and an InvoiceHandle. is it posible to leave out any of the parameters or maybe see the default somewhere, because im not sure what to set delivery date for on the line and the InventoryLocationHandle i get this erro msg atm. "soap:Client: Economic.Api.Exceptions.ValidationException(E04010): A CurrentInvoiceLine needs a reference to a CurrentInvoice. Not all lines sent have such a reference. (id=6754f928-baf5-41d2-9ea1-ad5c72c06541)"