Fee CN/DN

modules/account_invoice/invoice.py

@@ -2057,10 +2057,16 @@ class Invoice(Workflow, ModelSQL, ModelView, TaxableMixin, InvoiceReportMixin):
             var_qt = sum([i.quantity for i in gl])
             logger.info("LOT_TO_PROCESS:%s",lot)
             logger.info("FEE_TO_PROCESS:%s",gl[0].fee)
-            if (gl[0].fee and not gl[0].product.landed_cost):
+            fee_correction = (
+                gl[0].fee
+                and any(Decimal(str(i.quantity or 0)) < 0 for i in gl)
+                and any(Decimal(str(i.quantity or 0)) > 0 for i in gl))
+            if (gl[0].fee and not gl[0].product.landed_cost
+                    and not fee_correction):
                 diff = gl[0].fee.amount - gl[0].fee.get_non_cog(lot)
                 account_move = gl[0].fee._get_account_move_fee(lot,'in',diff)
-                Move.save([account_move])
+                if account_move:
+                    Move.save([account_move])
             if (lot and not gl[0].fee) or (gl[0].fee and gl[0].product.landed_cost):
                 adjust_move_lines = []
                 mov = None