diff --git a/SAS/ResourceAssignment/ResourceAssigner/lib/assignment.py b/SAS/ResourceAssignment/ResourceAssigner/lib/assignment.py
index 2e7cfbb8a12667566e6922c6ad452e5aed4a99a8..9c0269ca0ac8c6109a45ee31042d596d08445550 100755
--- a/SAS/ResourceAssignment/ResourceAssigner/lib/assignment.py
+++ b/SAS/ResourceAssignment/ResourceAssigner/lib/assignment.py
@@ -696,6 +696,8 @@ class ResourceAssigner():
                 used_rcus = needed_resources[db_rcu_type_id]
                 claim_size = used_rcus.count('1')
                 claim['used_rcus'] = used_rcus
+            else:
+                claim['used_rcus'] = None
 
             claim['claim_size'] = claim_size
             claimable_resources[res_type]['available_capacity'] -= claim_size