diff --git a/devops-service/db/mongo/models/stack/stack_base.rb b/devops-service/db/mongo/models/stack/stack_base.rb
index a6bea8c..cf118e5 100644
--- a/devops-service/db/mongo/models/stack/stack_base.rb
+++ b/devops-service/db/mongo/models/stack/stack_base.rb
@@ -19,37 +19,37 @@ module Devops
             run_list: {type: Array, value_type: String, empty: true, nil: true}
             # details: {type: Hash, nil: true} # Hash type isn't supported yet
 
-      set_field_validators :id, ::Validators::FieldValidator::NotNil,
+      set_field_validators :id, [::Validators::FieldValidator::NotNil,
                                       ::Validators::FieldValidator::FieldType::String,
-                                      ::Validators::FieldValidator::NotEmpty
+                                      ::Validators::FieldValidator::NotEmpty]
 
-      set_field_validators :provider, ::Validators::FieldValidator::NotNil,
+      set_field_validators :provider, [::Validators::FieldValidator::NotNil,
                                       ::Validators::FieldValidator::FieldType::String,
-                                      ::Validators::FieldValidator::NotEmpty
+                                      ::Validators::FieldValidator::NotEmpty]
 
-      set_field_validators :project, ::Validators::FieldValidator::NotNil,
+      set_field_validators :project, [::Validators::FieldValidator::NotNil,
                                       ::Validators::FieldValidator::FieldType::String,
-                                      ::Validators::FieldValidator::NotEmpty
+                                      ::Validators::FieldValidator::NotEmpty]
 
-      set_field_validators :deploy_env, ::Validators::FieldValidator::NotNil,
+      set_field_validators :deploy_env, [::Validators::FieldValidator::NotNil,
                                       ::Validators::FieldValidator::FieldType::String,
-                                      ::Validators::FieldValidator::NotEmpty
+                                      ::Validators::FieldValidator::NotEmpty]
 
-      set_field_validators :stack_template, ::Validators::FieldValidator::NotNil,
+      set_field_validators :stack_template, [::Validators::FieldValidator::NotNil,
                                       ::Validators::FieldValidator::FieldType::String,
-                                      ::Validators::FieldValidator::NotEmpty
+                                      ::Validators::FieldValidator::NotEmpty]
 
-      set_field_validators :name, ::Validators::FieldValidator::Nil,
+      set_field_validators :name, [::Validators::FieldValidator::Nil,
                                       ::Validators::FieldValidator::FieldType::String,
-                                      ::Validators::FieldValidator::NotEmpty
+                                      ::Validators::FieldValidator::NotEmpty]
 
-      set_field_validators :owner, ::Validators::FieldValidator::NotNil,
+      set_field_validators :owner, [::Validators::FieldValidator::NotNil,
                                       ::Validators::FieldValidator::FieldType::String,
-                                      ::Validators::FieldValidator::NotEmpty
+                                      ::Validators::FieldValidator::NotEmpty]
 
-      set_field_validators :run_list, ::Validators::FieldValidator::NotNil,
+      set_field_validators :run_list, [::Validators::FieldValidator::NotNil,
                                       ::Validators::FieldValidator::FieldType::Array,
-                                      ::Validators::FieldValidator::RunList
+                                      ::Validators::FieldValidator::RunList]
 
       def initialize attrs={}
 #        self.provider = self.class.provider
diff --git a/devops-service/db/mongo/models/stack_template/stack_template_base.rb b/devops-service/db/mongo/models/stack_template/stack_template_base.rb
index 6e43166..2bdfb1e 100644
--- a/devops-service/db/mongo/models/stack_template/stack_template_base.rb
+++ b/devops-service/db/mongo/models/stack_template/stack_template_base.rb
@@ -16,22 +16,22 @@ module Devops
             template_body: {type: String, empty: false},
             owner: {type: String, empty: false}
 
-      set_field_validators :id, ::Validators::FieldValidator::NotNil,
+      set_field_validators :id, [::Validators::FieldValidator::NotNil,
                                 ::Validators::FieldValidator::FieldType::String,
-                                ::Validators::FieldValidator::NotEmpty,
+                                ::Validators::FieldValidator::NotEmpty,]
                                 ::Validators::FieldValidator::Name
 
-      set_field_validators :provider, ::Validators::FieldValidator::NotNil,
+      set_field_validators :provider, [::Validators::FieldValidator::NotNil,
                                 ::Validators::FieldValidator::FieldType::String,
-                                ::Validators::FieldValidator::NotEmpty
+                                ::Validators::FieldValidator::NotEmpty]
 
-      set_field_validators :template_body, ::Validators::FieldValidator::NotNil,
+      set_field_validators :template_body, [::Validators::FieldValidator::NotNil,
                                 ::Validators::FieldValidator::FieldType::String,
-                                ::Validators::FieldValidator::NotEmpty
+                                ::Validators::FieldValidator::NotEmpty]
 
-      set_field_validators :owner, ::Validators::FieldValidator::NotNil,
+      set_field_validators :owner, [::Validators::FieldValidator::NotNil,
                                 ::Validators::FieldValidator::FieldType::String,
-                                ::Validators::FieldValidator::NotEmpty
+                                ::Validators::FieldValidator::NotEmpty]
 
       set_validators ::Validators::StackTemplate::TemplateContent