diff --git a/patrole_tempest_plugin/rbac_rule_validation.py b/patrole_tempest_plugin/rbac_rule_validation.py
index 69a43ea..7d48870 100644
--- a/patrole_tempest_plugin/rbac_rule_validation.py
+++ b/patrole_tempest_plugin/rbac_rule_validation.py
@@ -33,11 +33,13 @@
 LOG = logging.getLogger(__name__)
 
 _SUPPORTED_ERROR_CODES = [403, 404]
+_DEFAULT_ERROR_CODE = 403
 
 RBACLOG = logging.getLogger('rbac_reporting')
 
 
-def action(service, rule='', rules=None, expected_error_code=403,
+def action(service, rule='', rules=None,
+           expected_error_code=_DEFAULT_ERROR_CODE, expected_error_codes=None,
            extra_target_data=None):
     """A decorator for verifying OpenStack policy enforcement.
 
@@ -90,6 +92,25 @@
             A 404 should not be provided *unless* the endpoint masks a
             ``Forbidden`` exception as a ``NotFound`` exception.
 
+    :param list expected_error_codes: When the ``rules`` list parameter is
+        used, then this list indicates the expected error code to use if one
+        of the rules does not allow the role being tested. This list must
+        coincide with and its elements remain in the same order as the rules
+        in the rules list.
+
+        Example::
+            rules=["api_action1", "api_action2"]
+            expected_error_codes=[404, 403]
+
+        a) If api_action1 fails and api_action2 passes, then the expected
+           error code is 404.
+        b) if api_action2 fails and api_action1 passes, then the expected
+           error code is 403.
+        c) if both api_action1 and api_action2 fail, then the expected error
+           code is the first error seen (404).
+
+        If an error code is missing from the list, it is defaulted to 403.
+
     :param dict extra_target_data: Dictionary, keyed with ``oslo.policy``
         generic check names, whose values are string literals that reference
         nested ``tempest.test.BaseTestCase`` attributes. Used by
@@ -118,7 +139,9 @@
     if extra_target_data is None:
         extra_target_data = {}
 
-    rules = _prepare_rules(rule, rules)
+    rules, expected_error_codes = _prepare_multi_policy(rule, rules,
+                                                        expected_error_code,
+                                                        expected_error_codes)
 
     def decorator(test_func):
         role = CONF.patrole.rbac_test_role
@@ -141,8 +164,18 @@
                     disallowed_rules.append(rule)
                 allowed = allowed and _allowed
 
+            exp_error_code = expected_error_code
+            if disallowed_rules:
+                # Choose the first disallowed rule and expect the error
+                # code corresponding to it.
+                first_error_index = rules.index(disallowed_rules[0])
+                exp_error_code = expected_error_codes[first_error_index]
+                LOG.debug("%s: Expecting %d to be raised for policy name: %s",
+                          test_func.__name__, exp_error_code,
+                          disallowed_rules[0])
+
             expected_exception, irregular_msg = _get_exception_type(
-                expected_error_code)
+                exp_error_code)
 
             test_status = 'Allowed'
 
@@ -202,7 +235,32 @@
     return decorator
 
 
-def _prepare_rules(rule, rules):
+def _prepare_multi_policy(rule, rules, exp_error_code, exp_error_codes):
+
+    if exp_error_codes:
+        if not rules:
+            msg = ("The `rules` list must be provided if using the "
+                   "`expected_error_codes` list.")
+            raise ValueError(msg)
+        if len(rules) != len(exp_error_codes):
+            msg = ("The `expected_error_codes` list is not the same length "
+                   "as the `rules` list.")
+            raise ValueError(msg)
+        if exp_error_code:
+            deprecation_msg = (
+                "The `exp_error_code` argument has been deprecated in favor "
+                "of `exp_error_codes` and will be removed in a future "
+                "version.")
+            versionutils.report_deprecated_feature(LOG, deprecation_msg)
+            LOG.debug("The `exp_error_codes` argument will be used instead of "
+                      "`exp_error_code`.")
+        if not isinstance(exp_error_codes, (tuple, list)):
+            exp_error_codes = [exp_error_codes]
+    else:
+        exp_error_codes = []
+        if exp_error_code:
+            exp_error_codes.append(exp_error_code)
+
     if rules is None:
         rules = []
     elif not isinstance(rules, (tuple, list)):
@@ -216,7 +274,18 @@
             LOG.debug("The `rules` argument will be used instead of `rule`.")
         else:
             rules.append(rule)
-    return rules
+
+    # Fill in the exp_error_codes if needed. This is needed for the scenarios
+    # where no exp_error_codes array is provided, so the error codes must be
+    # set to the default error code value and there must be the same number
+    # of error codes as rules.
+    num_ecs = len(exp_error_codes)
+    num_rules = len(rules)
+    if (num_ecs < num_rules):
+        for i in range(num_rules - num_ecs):
+            exp_error_codes.append(_DEFAULT_ERROR_CODE)
+
+    return rules, exp_error_codes
 
 
 def _is_authorized(test_obj, service, rule, extra_target_data):
diff --git a/patrole_tempest_plugin/tests/api/network/test_routers_rbac.py b/patrole_tempest_plugin/tests/api/network/test_routers_rbac.py
index ab85745..812b0c1 100644
--- a/patrole_tempest_plugin/tests/api/network/test_routers_rbac.py
+++ b/patrole_tempest_plugin/tests/api/network/test_routers_rbac.py
@@ -330,7 +330,8 @@
             self.routers_client.delete_router(router['id'])
 
     @rbac_rule_validation.action(service="neutron",
-                                 rule="add_router_interface")
+                                 rules=["get_router", "add_router_interface"],
+                                 expected_error_codes=[404, 403])
     @decorators.idempotent_id('a0627778-d68d-4913-881b-e345360cca19')
     def test_add_router_interface(self):
         """Add Router Interface
diff --git a/patrole_tempest_plugin/tests/unit/test_rbac_rule_validation.py b/patrole_tempest_plugin/tests/unit/test_rbac_rule_validation.py
index 0a4c44b..2ae860c 100644
--- a/patrole_tempest_plugin/tests/unit/test_rbac_rule_validation.py
+++ b/patrole_tempest_plugin/tests/unit/test_rbac_rule_validation.py
@@ -436,7 +436,8 @@
 
         rules = [mock.sentinel.action1, mock.sentinel.action2]
 
-        @rbac_rv.action(mock.sentinel.service, rules=rules)
+        @rbac_rv.action(mock.sentinel.service, rules=rules,
+                        expected_error_codes=[403, 403])
         def test_policy(*args):
             pass
 
@@ -454,8 +455,10 @@
         rules = [
             mock.sentinel.action1, mock.sentinel.action2, mock.sentinel.action3
         ]
+        exp_ecodes = [403, 403, 403]
 
-        @rbac_rv.action(mock.sentinel.service, rules=rules)
+        @rbac_rv.action(mock.sentinel.service, rules=rules,
+                        expected_error_codes=exp_ecodes)
         def test_policy(*args):
             pass
 
@@ -466,6 +469,9 @@
             error_re = ".*OverPermission: .* \[%s\]$" % fail_on_action
             self.assertRaisesRegex(rbac_exceptions.RbacOverPermission,
                                    error_re, test_policy, self.mock_test_args)
+            mock_log.debug.assert_any_call(
+                "%s: Expecting %d to be raised for policy name: %s",
+                'test_policy', 403, fail_on_action)
             self.assertRegex(mock_log.error.mock_calls[0][1][0], error_re)
             mock_log.error.reset_mock()
             self._assert_policy_authority_called_with(rules, mock_authority)
@@ -485,21 +491,26 @@
         rules = [
             mock.sentinel.action1, mock.sentinel.action2, mock.sentinel.action3
         ]
+        exp_ecodes = [403, 403, 403]
 
-        @rbac_rv.action(mock.sentinel.service, rules=rules)
+        @rbac_rv.action(mock.sentinel.service, rules=rules,
+                        expected_error_codes=exp_ecodes)
         def test_policy(*args):
             raise exceptions.Forbidden()
 
-        def _do_test(allowed_list):
+        def _do_test(allowed_list, fail_on_action):
             mock_authority.PolicyAuthority.return_value.allowed.\
                 side_effect = allowed_list
             test_policy(self.mock_test_args)
+            mock_log.debug.assert_called_with(
+                "%s: Expecting %d to be raised for policy name: %s",
+                'test_policy', 403, fail_on_action)
             mock_log.error.assert_not_called()
             self._assert_policy_authority_called_with(rules, mock_authority)
 
-        _do_test([True, True, False])
-        _do_test([False, True, True])
-        _do_test([True, False, True])
+        _do_test([True, True, False], mock.sentinel.action3)
+        _do_test([False, True, True], mock.sentinel.action1)
+        _do_test([True, False, True], mock.sentinel.action2)
 
     @mock.patch.object(rbac_rv, 'LOG', autospec=True)
     @mock.patch.object(rbac_rv, 'policy_authority', autospec=True)
@@ -513,7 +524,8 @@
         # NOTE: Avoid mock.sentinel here due to weird sorting with them.
         rules = ['action1', 'action2', 'action3']
 
-        @rbac_rv.action(mock.sentinel.service, rules=rules)
+        @rbac_rv.action(mock.sentinel.service, rules=rules,
+                        expected_error_codes=[403, 403, 403])
         def test_policy(*args):
             raise exceptions.Forbidden()
 
@@ -528,3 +540,136 @@
                                self.mock_test_args)
         self.assertRegex(mock_log.error.mock_calls[0][1][0], error_re)
         self._assert_policy_authority_called_with(rules, mock_authority)
+
+    @mock.patch.object(rbac_rv, 'LOG', autospec=True)
+    @mock.patch.object(rbac_rv, 'policy_authority', autospec=True)
+    def test_rule_validation_multi_actions_forbidden(
+            self, mock_authority, mock_log):
+        """Test that when the expected result is forbidden because
+        two of the actions fail and the first action specifies 403,
+        verify that the overall evaluation results in success.
+        """
+
+        rules = [
+            mock.sentinel.action1, mock.sentinel.action2, mock.sentinel.action3
+        ]
+        exp_ecodes = [403, 403, 404]
+
+        @rbac_rv.action(mock.sentinel.service, rules=rules,
+                        expected_error_codes=exp_ecodes)
+        def test_policy(*args):
+            raise exceptions.Forbidden()
+
+        def _do_test(allowed_list, fail_on_action):
+            mock_authority.PolicyAuthority.return_value.allowed.\
+                side_effect = allowed_list
+            test_policy(self.mock_test_args)
+            mock_log.debug.assert_called_with(
+                "%s: Expecting %d to be raised for policy name: %s",
+                'test_policy', 403, fail_on_action)
+            mock_log.error.assert_not_called()
+            self._assert_policy_authority_called_with(rules, mock_authority)
+
+        _do_test([False, True, False], mock.sentinel.action1)
+        _do_test([False, False, True], mock.sentinel.action1)
+
+    @mock.patch.object(rbac_rv, 'LOG', autospec=True)
+    @mock.patch.object(rbac_rv, 'policy_authority', autospec=True)
+    def test_rule_validation_multi_actions_notfound(
+            self, mock_authority, mock_log):
+        """Test that when the expected result is not found because
+        two of the actions fail and the first action specifies 404,
+        verify that the overall evaluation results in success.
+        """
+
+        rules = [
+            mock.sentinel.action1, mock.sentinel.action2,
+            mock.sentinel.action3, mock.sentinel.action4
+        ]
+        exp_ecodes = [403, 404, 403, 403]
+
+        @rbac_rv.action(mock.sentinel.service, rules=rules,
+                        expected_error_codes=exp_ecodes)
+        def test_policy(*args):
+            raise exceptions.NotFound()
+
+        def _do_test(allowed_list, fail_on_action):
+            mock_authority.PolicyAuthority.return_value.allowed.\
+                side_effect = allowed_list
+            test_policy(self.mock_test_args)
+            mock_log.debug.assert_called_with(
+                "%s: Expecting %d to be raised for policy name: %s",
+                'test_policy', 404, fail_on_action)
+            mock_log.error.assert_not_called()
+            self._assert_policy_authority_called_with(rules, mock_authority)
+
+        _do_test([True, False, False, True], mock.sentinel.action2)
+        _do_test([True, False, True, False], mock.sentinel.action2)
+
+    @mock.patch.object(rbac_rv, 'LOG', autospec=True)
+    def test_prepare_multi_policy_allowed_usages(self, mock_log):
+
+        def _do_test(rule, rules, ecode, ecodes, exp_rules, exp_ecodes):
+            rule_list, ec_list = rbac_rv._prepare_multi_policy(rule, rules,
+                                                               ecode, ecodes)
+            self.assertEqual(rule_list, exp_rules)
+            self.assertEqual(ec_list, exp_ecodes)
+
+        # Validate that using deprecated values: rule and expected_error_code
+        # are converted into rules = [rule] and expected_error_codes =
+        # [expected_error_code]
+        _do_test("rule1", None, 403, None, ["rule1"], [403])
+
+        # Validate that rules = [rule] and expected_error_codes defaults to
+        # 403 when no values are provided.
+        _do_test("rule1", None, None, None, ["rule1"], [403])
+
+        # Validate that `len(rules) == len(expected_error_codes)` works when
+        # both == 1.
+        _do_test(None, ["rule1"], None, [403], ["rule1"], [403])
+
+        # Validate that `len(rules) == len(expected_error_codes)` works when
+        # both are > 1.
+        _do_test(None, ["rule1", "rule2"], None, [403, 404],
+                 ["rule1", "rule2"], [403, 404])
+
+        # Validate that when only a default expected_error_code argument is
+        # provided, that default value and other default values (403) are
+        # filled into the expected_error_codes list.
+        # Example:
+        #     @rbac_rv.action(service, rules=[<rule>, <rule>])
+        #     def test_policy(*args):
+        #        ...
+        _do_test(None, ["rule1", "rule2"], 403, None,
+                 ["rule1", "rule2"], [403, 403])
+
+        # Validate that the deprecated values are ignored when new values are
+        # provided.
+        _do_test("rule3", ["rule1", "rule2"], 404, [403, 403],
+                 ["rule1", "rule2"], [403, 403])
+        mock_log.debug.assert_any_call(
+            "The `rules` argument will be used instead of `rule`.")
+        mock_log.debug.assert_any_call(
+            "The `exp_error_codes` argument will be used instead of "
+            "`exp_error_code`.")
+
+    @mock.patch.object(rbac_rv, 'LOG', autospec=True)
+    def test_prepare_multi_policy_disallowed_usages(self, mock_log):
+
+        def _do_test(rule, rules, ecode, ecodes):
+            rule_list, ec_list = rbac_rv._prepare_multi_policy(rule, rules,
+                                                               ecode, ecodes)
+
+        error_re = ("The `expected_error_codes` list is not the same length"
+                    " as the `rules` list.")
+        # When len(rules) > 1 then len(expected_error_codes) must be same len.
+        self.assertRaisesRegex(ValueError, error_re, _do_test,
+                               None, ["rule1", "rule2"], None, [403])
+        # When len(expected_error_codes) > 1 len(rules) must be same len.
+        self.assertRaisesRegex(ValueError, error_re, _do_test,
+                               None, ["rule1"], None, [403, 404])
+        error_re = ("The `rules` list must be provided if using the "
+                    "`expected_error_codes` list.")
+        # When expected_error_codes is provided rules must be as well.
+        self.assertRaisesRegex(ValueError, error_re, _do_test,
+                               None, None, None, [404])
diff --git a/releasenotes/notes/multi-policy-support-4e5c8b4e9e25ad9d.yaml b/releasenotes/notes/multi-policy-support-4e5c8b4e9e25ad9d.yaml
index 3d192d9..1f33d8f 100644
--- a/releasenotes/notes/multi-policy-support-4e5c8b4e9e25ad9d.yaml
+++ b/releasenotes/notes/multi-policy-support-4e5c8b4e9e25ad9d.yaml
@@ -7,7 +7,25 @@
     expected test result. This allows Patrole to more accurately determine
     whether RBAC is configured correctly, since some API endpoints enforce
     multiple policies.
+
+    Multiple policy support includes the capability to specify multiple
+    expected error codes, as some components may return different error codes
+    for different roles due to checking multiple policy rules. The
+    ``expected_error_codes`` argument has been added to the
+    ``rbac_rule_validation.action`` decorator, which is a list of error codes
+    expected when the corresponding rule in the ``rules`` list is disallowed
+    to perform the API action. For this reason, the error codes in the
+    ``expected_error_codes`` list must appear in the same order as their
+    corresponding rules in the ``rules`` list. For example:
+
+        expected_error_codes[0] is the error code for the rules[0] rule.
+        expected_error_codes[1] is the error code for the rules[1] rule.
+        ...
+
 deprecations:
   - |
     The ``rule`` argument in the ``rbac_rule_validation.action`` decorator has
     been deprecated in favor of ``rules``.
+
+    The ``expected_error_code`` argument in the ``rbac_rule_validation.action``
+    decorator has been deprecated in favor of ``expected_error_codes``.