Keep party NCF types scoped per party

party.py

@@ -62,6 +62,19 @@ class Party(CompanyMultiValueMixin, metaclass=PoolMeta):
         return config.get_multivalue(
             'default_customer_ncf_type', **pattern)
 
+    def get_multivalue(self, name, **pattern):
+        if name in {'customer_ncf_type', 'supplier_ncf_type'}:
+            pattern = pattern.copy()
+            pattern.setdefault('party', self.id)
+        return super().get_multivalue(name, **pattern)
+
+    def set_multivalue(self, name, value, save=True, **pattern):
+        if name in {'customer_ncf_type', 'supplier_ncf_type'}:
+            pattern = pattern.copy()
+            pattern.setdefault('party', self.id)
+        return super().set_multivalue(
+            name, value, save=save, **pattern)
+
     @classmethod
     def default_supplier_ncf_type(cls, **pattern):
         pool = Pool()