When I validate an Invoice, OE create : a move line per product, one per tax account and one for customer account.

But my accountant need : ONE line per product account, one per tax account and one for customer account.

How can I group the invoice line by product account to create only one account line move?

EX (I use the french account chart) :

Invoice:

• 3 products with 706000 account

  • A -> 300€
  • B -> 500€
  • C -> 400€

• 2 products with 706100 account

  • D -> 1000€
  • E -> 700€

Actually I have this move lines if I valid the Invoice:

1. Desc. | Account| Amount
2. Product A | 706000 | 300€
3. Product B | 706000 | 500€
4. Product C | 706000 | 400€
5. Product D | 706100 | 1000€
6. Product E | 706100 | 700€

And I want this:

1. Desc. | Account| Amount
2. Invoice X Account 706000 | 706000 | 1200€
3. Invoice X Account 706100 | 706100 | 1700€