diff --git a/base_tier_validation/models/tier_validation.py b/base_tier_validation/models/tier_validation.py
index 6479bb5bff..0d069c06ab 100644
--- a/base_tier_validation/models/tier_validation.py
+++ b/base_tier_validation/models/tier_validation.py
@@ -274,10 +274,9 @@ def evaluate_tier(self, tier):
         else:
             return self
 
-    @api.model
-    def _get_validation_exceptions(self, extra_domain=None, add_base_exceptions=True):
+    def _get_exception_fields(self, extra_domain=None):
         """Return Tier Validation Exception field names that matchs custom domain."""
-        exception_fields = (
+        return (
             self.env["tier.validation.exception"]
             .sudo()
             .search(
@@ -292,6 +291,11 @@ def _get_validation_exceptions(self, extra_domain=None, add_base_exceptions=True
             )
             .mapped("field_ids.name")
         )
+
+    @api.model
+    def _get_validation_exceptions(self, extra_domain=None, add_base_exceptions=True):
+        """Return Tier Validation Exception field names that matchs custom domain."""
+        exception_fields = self._get_exception_fields(extra_domain=extra_domain)
         if add_base_exceptions:
             exception_fields += BASE_EXCEPTION_FIELDS
         return list(set(exception_fields))
diff --git a/base_tier_validation/tests/test_tier_validation.py b/base_tier_validation/tests/test_tier_validation.py
index 4103d54853..01357bb55f 100644
--- a/base_tier_validation/tests/test_tier_validation.py
+++ b/base_tier_validation/tests/test_tier_validation.py
@@ -947,6 +947,7 @@ def test_27_change_field_exception_validation(self):
         # Able to write test_validation_field after validation
         with mock.patch.multiple(
             TV,
+            _get_exception_fields=mock.MagicMock(return_value=_tvf),
             _get_validation_exceptions=mock.MagicMock(return_value=_tvf),
             _get_after_validation_exceptions=mock.MagicMock(return_value=_rv),
         ):