---
title: Configuration Nodes
slug: manufacturing-connect-edge/configuration-nodes
docTags: 
createdAt: 2022-06-22T20:20:24.000Z
---

- When you select **Configuration Nodes** from the menu, the *Config *tab opens beneath the canvas to display used and unused nodes.
- When you delete a node from a flow, it may not be deleted from the back end.
- Server-based nodes that require network / connectivity settings, such as MQTT nodes, are found here if they have been deleted from a flow.
- You may want to remove these types of unused nodes from the back-end because they may continue to try connecting to a port and degrade performance.
- Not all deleted nodes appear in the **Config** tab.
- When you save a flow or the entire workspace, a pop-up message notifies you if there are unused nodes.

# Remove Unused Nodes

You can remove unused nodes from a Flows View.

Server-based nodes that require network / connectivity settings, such as MQTT nodes, are found here if they have been deleted from a flow.

**To identify and remove unused nodes:**

1. From the Navigation panel, select **Flows Manager**.

   The *Overview *pane appears.
2. Click the **Go To Flow Definition** icon next to a selected flow.
   The selected flow view opens in a separate browser tab.
   ::Image[]{src="https://api.archbee.com/api/optimize/SSUUxKZUk9bFTEPNn_6Zo/bkUM9VGHcVlmsNP3iOULL_gotoflowdefinition.png" size="80" width="1080" height="547" caption="Go To Flow Definition icon" position="center" showCaption="true"}
3. From the Flow view, click the **Menu** icon and select **Configuration nodes**.
   The *config *tab appears in the sidebar.
   ::Image[]{src="https://api.archbee.com/api/optimize/SSUUxKZUk9bFTEPNn_6Zo/UFX--fPBcZpzyBGhpgFtv_02znkxu1yizonwxe9d7nkmvimage.png" size="80" width="1664" height="718" caption="Configuration nodes menu option" position="center" showCaption="true"}
4. Expand the message window beneath the flow. 
5. Click the **Config** icon.
   The *Config *tab appears in the sidebar palette.
   ::Image[]{src="https://api.archbee.com/api/optimize/SSUUxKZUk9bFTEPNn_6Zo/4TBZ2NPBlQ5w3FjnualM2_03jqzthxgw8qtfeqnd61epconfig-palette.png" size="80" width="1393" height="383" caption="Flow Definition Config Tab" position="center" showCaption="true"}
6. Click **unused**.
   The unused nodes appear for the selected flow. You can also view the unused nodes for all flows. Identify unused nodes by the dotted-line border and a 0 for the number of instances.
7. Remove unused nodes from the canvas.