diff --git a/tempest_lib/exceptions.py b/tempest_lib/exceptions.py
index 2ceef3e..ba368a5 100644
--- a/tempest_lib/exceptions.py
+++ b/tempest_lib/exceptions.py
@@ -150,4 +150,8 @@ class IdentityError(TempestException):
 
 
 class EndpointNotFound(TempestException):
-    message = "Endpoint not found"
\ No newline at end of file
+    message = "Endpoint not found"
+
+
+class InvalidCredentials(TempestException):
+    message = "Invalid Credentials"
\ No newline at end of file