diff --git a/app/models/service_template_transformation_plan.rb b/app/models/service_template_transformation_plan.rb
index c7dce1fc3c0..fa2deb70584 100644
--- a/app/models/service_template_transformation_plan.rb
+++ b/app/models/service_template_transformation_plan.rb
@@ -41,8 +41,8 @@ def self.default_reconfiguration_entry_point
   #     :pre_service_id
   #     :post_service_id
   #     :actions => [
-  #        {:vm_id => 1, :pre_service => true, :post_service => false},
-  #        {:vm_id => 2, :pre_service => true, :post_service => true},
+  #        {:vm_id => "1", :pre_service => true, :post_service => false},
+  #        {:vm_id => "2", :pre_service => true, :post_service => true},
   #     ]
   #
   def self.create_catalog_item(options, _auth_user = nil)
@@ -83,9 +83,9 @@ def self.validate_config_info(options)
 
     vms = []
     if config_info[:actions]
-      vm_objects = VmOrTemplate.where(:id => config_info[:actions].collect { |vm_hash| vm_hash[:vm_id] }.compact).group_by(&:id)
+      vm_objects = VmOrTemplate.where(:id => config_info[:actions].collect { |vm_hash| vm_hash[:vm_id] }.compact).index_by(&:id).stringify_keys
       config_info[:actions].each do |vm_hash|
-        vm_obj = vm_objects[vm_hash[:vm_id]].try(:first) || vm_hash[:vm]
+        vm_obj = vm_objects[vm_hash[:vm_id]] || vm_hash[:vm]
         next if vm_obj.nil?
 
         vm_options = {}
diff --git a/spec/models/service_template_transformation_plan_spec.rb b/spec/models/service_template_transformation_plan_spec.rb
index f05b5d99a90..a072f9334f4 100644
--- a/spec/models/service_template_transformation_plan_spec.rb
+++ b/spec/models/service_template_transformation_plan_spec.rb
@@ -30,8 +30,8 @@
         :pre_service_id            => apst.id,
         :post_service_id           => apst.id,
         :actions                   => [
-          {:vm_id => vm1.id, :pre_service => true, :post_service => false},
-          {:vm_id => vm2.id, :pre_service => true, :post_service => true}
+          {:vm_id => vm1.id.to_s, :pre_service => true, :post_service => false},
+          {:vm_id => vm2.id.to_s, :pre_service => true, :post_service => true}
         ],
       }
     }
diff --git a/spec/models/service_template_transformation_plan_task_spec.rb b/spec/models/service_template_transformation_plan_task_spec.rb
index 430cf69d4b0..12130dcdf10 100644
--- a/spec/models/service_template_transformation_plan_task_spec.rb
+++ b/spec/models/service_template_transformation_plan_task_spec.rb
@@ -34,8 +34,8 @@
           :pre_service_id            => apst.id,
           :post_service_id           => apst.id,
           :actions                   => [
-            {:vm_id => vm.id, :pre_service => true, :post_service => true},
-            {:vm_id => vm2.id, :pre_service => false, :post_service => false},
+            {:vm_id => vm.id.to_s, :pre_service => true, :post_service => true},
+            {:vm_id => vm2.id.to_s, :pre_service => false, :post_service => false},
           ],
         }
       }