> For the complete documentation index, see [llms.txt](https://docs.mobb.ai/mobb-user-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.mobb.ai/mobb-user-docs/common-troubleshooting-scenarios/broker-scm-url-changed.md).

# Broker & Tokens - SCM or broker URL changed

{% hint style="warning" %}
This scenario applies **only to on-premises deployments** that use the [Mobb Broker](/mobb-user-docs/more-info/mobb-broker.md).
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**Symptoms**

* Your on-premises SCM hostname, domain, or broker endpoint changed.
* Mobb can no longer connect after an infrastructure change.

**Likely cause**

The broker is configured with fixed target and host values. When the SCM address or brokered domain changes, those values are stale.

**Resolution**

1. Update `TARGET_SERVER_URL` and `HOST_HEADER_OVERWRITE` to the new SCM address.
2. Confirm `FRP_BROKER_SERVER_HOST` and `FRP_BROKERED_DOMAIN` match the values provided by your Mobb representative.
3. Restart the broker container.

If you're unsure of the correct broker server host or brokered-domain values, contact <support@mobb.ai>.

{% hint style="info" %}
Updating the **broker (tunnel) token** is different from updating the **SCM credential** (the PAT/OAuth token Mobb uses to authenticate to your SCM). For the latter, see [Update Broker Token](/mobb-user-docs/more-info/update-broker-token.md).
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