diff --git a/tempest/lib/common/dynamic_creds.py b/tempest/lib/common/dynamic_creds.py
index 6c90938244..1815dc6792 100644
--- a/tempest/lib/common/dynamic_creds.py
+++ b/tempest/lib/common/dynamic_creds.py
@@ -384,8 +384,9 @@ class DynamicCredentialProvider(cred_provider.CredentialProvider):
                                                        subnet_id=subnet_id)
 
     def _get_project_id(self, credential_type, scope):
-        same_creds = [['admin'], ['member'], ['reader']]
-        same_alt_creds = [['alt_admin'], ['alt_member'], ['alt_reader']]
+        same_creds = [['admin'], ['manager'], ['member'], ['reader']]
+        same_alt_creds = [['alt_admin'], ['alt_manager'],
+                          ['alt_member'], ['alt_reader']]
         search_in = []
         if credential_type in same_creds:
             search_in = same_creds
diff --git a/tempest/tests/lib/common/test_dynamic_creds.py b/tempest/tests/lib/common/test_dynamic_creds.py
index 4c2ea30d87..4122db3604 100644
--- a/tempest/tests/lib/common/test_dynamic_creds.py
+++ b/tempest/tests/lib/common/test_dynamic_creds.py
@@ -252,6 +252,7 @@ class TestDynamicCredentialProvider(base.TestCase):
             reader_func = creds.get_project_alt_reader_creds
         else:
             admin_func = creds.get_project_admin_creds
+            manager_func = creds.get_project_manager_creds
             member_func = creds.get_project_member_creds
             reader_func = creds.get_project_reader_creds
         self._mock_assign_user_role()
@@ -286,6 +287,15 @@ class TestDynamicCredentialProvider(base.TestCase):
         self._request_and_check_second_creds(
             creds, admin_func, member_creds, show_mock, sm_count=2)
 
+        # Now request for the project manager creds which should not create new
+        # project instead should use the project_id of member_creds already
+        # created project.
+        # TODO(gmaan): test test_alt_creds also once alt project
+        # manager is available.
+        if not test_alt_creds:
+            self._request_and_check_second_creds(
+                creds, manager_func, member_creds, show_mock, sm_count=3)
+
     def test_creds_within_same_project(self):
         self._creds_within_same_project()