diff --git a/NTO/ServiceManagement/attributes/taskStatus.yaml b/NTO/ServiceManagement/attributes/taskStatus.yaml
index cba02731501..e15ec211582 100644
--- a/NTO/ServiceManagement/attributes/taskStatus.yaml
+++ b/NTO/ServiceManagement/attributes/taskStatus.yaml
@@ -12,9 +12,13 @@
     admin-contact: arago GmbH
     tech-contact: arago GmbH
     validation-type: regex
-    validation-parameter: "^(New|Open|Pending|Cancelled|InProgress|Closed)$"
+    validation-parameter: "^(New|Assigned|Pending|Resolved|Closed|Escalated)$"
     history:
       - id: 1
         date: 2015-05-21
         description: initial
         modified-by: Peter Larem
+      - id: 2
+        date: 2015-12-17
+        description: change validation parameter
+        modified-by: Peter Larem