diff --git a/tempest/api/database/flavors/test_flavors.py b/tempest/api/database/flavors/test_flavors.py
index 62c1e05..f75b867 100644
--- a/tempest/api/database/flavors/test_flavors.py
+++ b/tempest/api/database/flavors/test_flavors.py
@@ -28,7 +28,7 @@
     @test.idempotent_id('c94b825e-0132-4686-8049-8a4a2bc09525')
     def test_get_db_flavor(self):
         # The expected flavor details should be returned
-        flavor = (self.client.get_db_flavor_details(self.db_flavor_ref)
+        flavor = (self.client.show_db_flavor(self.db_flavor_ref)
                   ['flavor'])
         self.assertEqual(self.db_flavor_ref, str(flavor['id']))
         self.assertIn('ram', flavor)
@@ -38,7 +38,7 @@
     @test.attr(type='smoke')
     @test.idempotent_id('685025d6-0cec-4673-8a8d-995cb8e0d3bb')
     def test_list_db_flavors(self):
-        flavor = (self.client.get_db_flavor_details(self.db_flavor_ref)
+        flavor = (self.client.show_db_flavor(self.db_flavor_ref)
                   ['flavor'])
         # List of all flavors should contain the expected flavor
         flavors = self.client.list_db_flavors()['flavors']
@@ -67,7 +67,7 @@
                          (os_flavors, db_flavors))
         for os_flavor in os_flavors:
             db_flavor =\
-                self.client.get_db_flavor_details(os_flavor['id'])['flavor']
+                self.client.show_db_flavor(os_flavor['id'])['flavor']
             self._check_values(['id', 'name', 'ram'], db_flavor, os_flavor)
             self._check_values(['disk', 'vcpus', 'swap'], db_flavor, os_flavor,
                                in_db=False)
diff --git a/tempest/api/database/flavors/test_flavors_negative.py b/tempest/api/database/flavors/test_flavors_negative.py
index 68cb7d6..3dee96f 100644
--- a/tempest/api/database/flavors/test_flavors_negative.py
+++ b/tempest/api/database/flavors/test_flavors_negative.py
@@ -31,4 +31,4 @@
     def test_get_non_existent_db_flavor(self):
         # flavor details are not returned for non-existent flavors
         self.assertRaises(lib_exc.NotFound,
-                          self.client.get_db_flavor_details, -1)
+                          self.client.show_db_flavor, -1)
diff --git a/tempest/api/identity/admin/v3/test_policies.py b/tempest/api/identity/admin/v3/test_policies.py
index 44e5c7b..f38d25d 100644
--- a/tempest/api/identity/admin/v3/test_policies.py
+++ b/tempest/api/identity/admin/v3/test_policies.py
@@ -64,7 +64,7 @@
             policy['id'], type=update_type)['policy']
         self.assertIn('type', data)
         # Assertion for updated value with fetched value
-        fetched_policy = self.policy_client.get_policy(policy['id'])['policy']
+        fetched_policy = self.policy_client.show_policy(policy['id'])['policy']
         self.assertIn('id', fetched_policy)
         self.assertIn('blob', fetched_policy)
         self.assertIn('type', fetched_policy)
diff --git a/tempest/common/api_version_request.py b/tempest/common/api_version_request.py
index 72a11ea..d8a5b56 100644
--- a/tempest/common/api_version_request.py
+++ b/tempest/common/api_version_request.py
@@ -54,6 +54,8 @@
             None value should be used to create Null APIVersionRequest,
             which is equal to 0.0
         """
+        # NOTE(gmann): 'version_string' as String "None" will be considered as
+        # invalid version string.
         self.ver_major = 0
         self.ver_minor = 0
 
diff --git a/tempest/config.py b/tempest/config.py
index 26dda2d..a6212fb 100644
--- a/tempest/config.py
+++ b/tempest/config.py
@@ -347,16 +347,18 @@
                     "The format is 'X.Y', where 'X' and 'Y' are int values. "
                     "Tempest selects tests based on the range between "
                     "min_microversion and max_microversion. "
-                    "If both values are None, Tempest avoids tests which "
-                    "require a microversion."),
+                    "If both values are not specified, Tempest avoids tests "
+                    "which require a microversion. Valid values are string "
+                    "with format 'X.Y' or string 'latest'"),
     cfg.StrOpt('max_microversion',
                default=None,
                help="Upper version of the test target microversion range. "
                     "The format is 'X.Y', where 'X' and 'Y' are int values. "
                     "Tempest selects tests based on the range between "
                     "min_microversion and max_microversion. "
-                    "If both values are None, Tempest avoids tests which "
-                    "require a microversion."),
+                    "If both values are not specified, Tempest avoids tests "
+                    "which require a microversion. Valid values are string "
+                    "with format 'X.Y' or string 'latest'"),
     cfg.BoolOpt('disk_config',
                 default=True,
                 help="If false, skip disk config tests"),
diff --git a/tempest/exceptions.py b/tempest/exceptions.py
index 8537898..1d725af 100644
--- a/tempest/exceptions.py
+++ b/tempest/exceptions.py
@@ -177,8 +177,8 @@
 
 
 class InvalidAPIVersionString(TempestException):
-    msg_fmt = ("API Version String %(version)s is of invalid format. Must "
-               "be of format MajorNum.MinorNum.")
+    message = ("API Version String %(version)s is of invalid format. Must "
+               "be of format MajorNum.MinorNum or string 'latest'.")
 
 
 class CommandFailed(Exception):
diff --git a/tempest/hacking/ignored_list_T110.txt b/tempest/hacking/ignored_list_T110.txt
index dd3e489..8de3151 100644
--- a/tempest/hacking/ignored_list_T110.txt
+++ b/tempest/hacking/ignored_list_T110.txt
@@ -1,6 +1,4 @@
-./tempest/services/database/json/flavors_client.py
 ./tempest/services/identity/v3/json/identity_client.py
-./tempest/services/identity/v3/json/policy_client.py
 ./tempest/services/messaging/json/messaging_client.py
 ./tempest/services/object_storage/object_client.py
 ./tempest/services/telemetry/json/alarming_client.py
diff --git a/tempest/services/database/json/flavors_client.py b/tempest/services/database/json/flavors_client.py
index 88feb17..34a91ba 100644
--- a/tempest/services/database/json/flavors_client.py
+++ b/tempest/services/database/json/flavors_client.py
@@ -31,8 +31,8 @@
         body = json.loads(body)
         return service_client.ResponseBody(resp, body)
 
-    def get_db_flavor_details(self, db_flavor_id):
-        resp, body = self.get("flavors/%s" % str(db_flavor_id))
+    def show_db_flavor(self, db_flavor_id):
+        resp, body = self.get("flavors/%s" % db_flavor_id)
         self.expected_success(200, resp.status)
         body = json.loads(body)
         return service_client.ResponseBody(resp, body)
diff --git a/tempest/services/identity/v3/json/policy_client.py b/tempest/services/identity/v3/json/policy_client.py
index ecc9df7..7927ed5 100644
--- a/tempest/services/identity/v3/json/policy_client.py
+++ b/tempest/services/identity/v3/json/policy_client.py
@@ -44,7 +44,7 @@
         body = json.loads(body)
         return service_client.ResponseBody(resp, body)
 
-    def get_policy(self, policy_id):
+    def show_policy(self, policy_id):
         """Lists out the given policy."""
         url = 'policies/%s' % policy_id
         resp, body = self.get(url)