diff --git a/releasenotes/notes/add-consistency-group-exceptions-01cbb792cd710231.yaml b/releasenotes/notes/add-consistency-group-exceptions-01cbb792cd710231.yaml
new file mode 100644
index 0000000000..e879c2cd05
--- /dev/null
+++ b/releasenotes/notes/add-consistency-group-exceptions-01cbb792cd710231.yaml
@@ -0,0 +1,6 @@
+---
+fixes:
+  - |
+    Fixed bug #1858417. Adding consistency group exceptions
+    ``ConsistencyGroupException`` and ``ConsistencyGroupSnapshotException``
+    that didn't exist before and caused failure in cinder-tempest-plugin.
diff --git a/tempest/lib/exceptions.py b/tempest/lib/exceptions.py
index 13af890510..b25b4b2e0d 100644
--- a/tempest/lib/exceptions.py
+++ b/tempest/lib/exceptions.py
@@ -280,3 +280,12 @@ class InvalidTestResource(TempestException):
 
 class InvalidParam(TempestException):
     message = ("Invalid Parameter passed: %(invalid_param)s")
+
+
+class ConsistencyGroupException(TempestException):
+    message = "Consistency group %(cg_id)s failed and is in ERROR status"
+
+
+class ConsistencyGroupSnapshotException(TempestException):
+    message = ("Consistency group snapshot %(cgsnapshot_id)s failed and is "
+               "in ERROR status")