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# I have updated the BOM but Signal Flow Diagram is not updating

If the **Signal Flow Diagram is not updating in** XTEN-AV **after you update the BOM**, it usually happens because the **Line Schematics are not updated properly**.

**Kindly follow the steps below to update the Line Schematics:**

* Add, remove, or update the product in the BOM as required.

![](https://storage.crisp.chat/users/helpdesk/website/-/e/3/c/d/e3cdae6433963000/image-22_1emtmfy.png)

* If your making changes to the existing product, kindly select the **Re-draw Device** option and then click on **Add Product** to update the changes.

![](https://storage.crisp.chat/users/helpdesk/website/-/e/3/c/d/e3cdae6433963000/image-23_9nj96p.png)

* Then open the **Line Schematics** in the X-DRAW Editor and click on the **Pull BOM Changes** option to update the diagram with the latest BOM modifications.

**Note:** Once the updated device starts reflecting in the Line Schematics, you will need to re-create the connections.

![](https://storage.crisp.chat/users/helpdesk/website/-/e/3/c/d/e3cdae6433963000/image-25_jt0hv6.png)

* After creating the connections, click on the **Unsaved Changes. Click here to save** button to save the changes.

![](https://storage.crisp.chat/users/helpdesk/website/-/e/3/c/d/e3cdae6433963000/image-25_7a5luy.png)

* Then open the **View Docs** page and hover over the **Automated Signal Flow Diagram** tile. Click on the **three-dot (⋮) menu**, and select the **Re-Generate** option to update the changes in the Signal Flow Diagram.

![](https://storage.crisp.chat/users/helpdesk/website/-/e/3/c/d/e3cdae6433963000/image-29_1rcjwid.png)

* A confirmation pop-up window will appear. Click on **Regenerate** to proceed.

![](https://storage.crisp.chat/users/helpdesk/website/-/e/3/c/d/e3cdae6433963000/image-30_127a0ee.png)

* It will take some time to regenerate. Once the process is complete, the updated Signal Flow Diagram will open in the **X-DRAW Editor**.

![](https://storage.crisp.chat/users/helpdesk/website/-/e/3/c/d/e3cdae6433963000/download-7_sg9u1k.png)

### Related Articles

* [How to Download the Signal Flow Diagram in X-DRAW Method](https://knowledgebase.xtenav.com/en-us/article/how-to-download-the-signal-flow-diagram-in-the-x-draw-method-1vf7tj4/?utm_source=chatgpt.com)
* [How to Draw a Triangle in a Signal Flow Chart]()
* [How to View Signal Flow Diagram](https://knowledgebase.xtenav.com/en-us/article/how-to-view-signal-flow-diagram-ly1kux/)