Tax rounding: Allow to apply only for B2B (Z#23220106) (#5810)

* Tax rounding: Allow to apply only for B2B (Z#23220106)

Most effective in combination with #5807

* Update src/pretix/base/settings.py

Co-authored-by: Richard Schreiber <schreiber@pretix.eu>

---------

Co-authored-by: Richard Schreiber <schreiber@pretix.eu>

src/pretix/control/forms/event.py

@@ -867,6 +867,11 @@ class TaxSettingsForm(EventSettingsValidationMixin, SettingsForm):
                 "The gross price of some products may be changed to ensure correct rounding, while the net "
                 "prices will be kept as configured. This may cause the actual payment amount to differ."
             ),
+            "sum_by_net_only_business": _(
+                "Same as above, but only applied to business customers. Line-based rounding will be used for consumers. "
+                "Recommended when e-invoicing is only used for business customers and consumers do not receive "
+                "invoices. This can cause the payment amount to change when the invoice address is changed."
+            ),
             "sum_by_net_keep_gross": _(
                 "Recommended for e-invoicing when you primarily sell to consumers. "
                 "The gross or net price of some products may be changed automatically to ensure correct "

src/pretix/control/logdisplay.py

@@ -170,6 +170,12 @@ class OrderFeeAdded(OrderChangeLogEntryType):
     plain = _('A fee has been added')
 
 
+@log_entry_types.new()
+class OrderRecomputed(OrderChangeLogEntryType):
+    action_type = 'pretix.event.order.changed.recomputed'
+    plain = _('Taxes and rounding have been recomputed')
+
+
 @log_entry_types.new()
 class OrderFeeChanged(OrderChangeLogEntryType):
     action_type = 'pretix.event.order.changed.feevalue'