diff --git a/lib/custom_wizard/action.rb b/lib/custom_wizard/action.rb
index eb614076..ac0799f3 100644
--- a/lib/custom_wizard/action.rb
+++ b/lib/custom_wizard/action.rb
@@ -456,14 +456,15 @@ class CustomWizard::Action
 
       if new_group_params[:usernames].present?
         user_ids = get_user_ids(new_group_params[:usernames])
+        if user_ids.count < new_group_params[:usernames].count
+          log_error("Warning, group creation: some users were not found!")
+        end
         user_ids -= owner_ids if owner_ids
         user_ids.each { |user_id| group.group_users.build(user_id: user_id) }
       end
 
       if group.save
         log_success("Group created", group.name)
-      else
-        log_error("Group users creation failed", group.errors.messages)
       end
 
       result.output = group.name
diff --git a/spec/components/custom_wizard/action_spec.rb b/spec/components/custom_wizard/action_spec.rb
index d2fde3df..9a89e5b4 100644
--- a/spec/components/custom_wizard/action_spec.rb
+++ b/spec/components/custom_wizard/action_spec.rb
@@ -13,6 +13,7 @@ describe CustomWizard::Action do
   let(:watch_categories) { get_wizard_fixture("actions/watch_categories") }
   let(:watch_tags) { get_wizard_fixture("actions/watch_tags") }
   let(:create_group) { get_wizard_fixture("actions/create_group") }
+  let(:create_group_with_nonexistant_user) { get_wizard_fixture("actions/create_group_bad_user") }
   let(:add_to_group) { get_wizard_fixture("actions/add_to_group") }
   let(:send_message) { get_wizard_fixture("actions/send_message") }
   let(:send_message_multi) { get_wizard_fixture("actions/send_message_multi") }
@@ -358,6 +359,20 @@ describe CustomWizard::Action do
       expect(GroupUser.where(group_id: group_id, user_id: user_id).exists?).to eq(true)
     end
 
+    it '#create_group completes successfully when user included in usernames does not exist but excludes users who do not exist and includes warning in log' do
+      wizard_template['actions'] << create_group_with_nonexistant_user
+      update_template(wizard_template)
+
+      wizard = CustomWizard::Builder.new(@template[:id], user).build
+      wizard.create_updater(wizard.steps[0].id, step_1_field_1: "Text input").update
+
+      group_id = Group.where(name: wizard.current_submission.fields['action_9']).first.id
+
+      expect(CustomWizard::Log.list_query.all.last.value.include? "some users were not found").to eq(true)
+      expect(Group.where(name: wizard.current_submission.fields['action_9']).exists?).to eq(true)
+      expect(GroupUser.where(group_id: group_id).count).to eq(1)
+    end
+
     it '#add_to_group' do
       wizard_template['actions'] << create_group
       wizard_template['actions'] << add_to_group
diff --git a/spec/fixtures/actions/create_group_bad_user.json b/spec/fixtures/actions/create_group_bad_user.json
new file mode 100644
index 00000000..96d6796d
--- /dev/null
+++ b/spec/fixtures/actions/create_group_bad_user.json
@@ -0,0 +1,104 @@
+{
+  "id": "action_9",
+  "run_after": "step_1",
+  "type": "create_group",
+  "title": [
+    {
+      "type": "assignment",
+      "output": "New Group Member",
+      "output_type": "text",
+      "output_connector": "set"
+    }
+  ],
+  "custom_fields": [
+    {
+      "type": "association",
+      "pairs": [
+        {
+          "index": 0,
+          "key": "group_custom_field",
+          "key_type": "text",
+          "value": "step_3_field_1",
+          "value_type": "wizard_field",
+          "connector": "association"
+        }
+      ]
+    }
+  ],
+  "name": [
+    {
+      "type": "assignment",
+      "output": "step_1_field_1",
+      "output_type": "wizard_field",
+      "output_connector": "set"
+    }
+  ],
+  "full_name": [
+    {
+      "type": "assignment",
+      "output": "step_1_field_1",
+      "output_type": "wizard_field",
+      "output_connector": "set"
+    }
+  ],
+  "usernames": [
+    {
+      "type": "assignment",
+      "output_type": "user",
+      "output_connector": "set",
+      "output": [
+        "angus3"
+      ]
+    }
+  ],
+  "owner_usernames": [
+    {
+      "type": "assignment",
+      "output_type": "user",
+      "output_connector": "set",
+      "output": [
+        "angus"
+      ]
+    }
+  ],
+  "grant_trust_level": [
+    {
+      "type": "assignment",
+      "output": "3",
+      "output_type": "text",
+      "output_connector": "set"
+    }
+  ],
+  "mentionable_level": [
+    {
+      "type": "assignment",
+      "output": "1",
+      "output_type": "text",
+      "output_connector": "set"
+    }
+  ],
+  "messageable_level": [
+    {
+      "type": "assignment",
+      "output": "2",
+      "output_type": "text",
+      "output_connector": "set"
+    }
+  ],
+  "visibility_level": [
+    {
+      "type": "assignment",
+      "output": "3",
+      "output_type": "text",
+      "output_connector": "set"
+    }
+  ],
+  "members_visibility_level": [
+    {
+      "type": "assignment",
+      "output": "99",
+      "output_type": "text",
+      "output_connector": "set"
+    }
+  ]
+}
\ No newline at end of file