---
title: "Removing Orphaned Host Instances from alarm mapping"
slug: "removing-orphaned-host-instances-from-alarm-mapping"
updated: 2024-09-27T12:17:40Z
published: 2024-09-27T12:17:40Z
canonical: "docs.biztalk360.com/removing-orphaned-host-instances-from-alarm-mapping"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.biztalk360.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Removing Orphaned Host Instances from alarm mapping

You might get an alert message for a mapped Host Instance as 'Configured Host Instance (Host Name: BTHost, Server Name:BT360SUP03). No longer exist in the Environment'.

If the web portal (Administration / Infrastructure Settings / Host Instances) does not list the old instance anymore, we must do the following:

Remove the host instances mapped to the alarm in Alarm Mapping and restart the monitoring service once.

![image.png](https://cdn.document360.io/253f6006-3994-42d0-98cd-fdc637f51791/Images/Documentation/image-VQHM08AB.png)

After removing the mapping, reconfigure the particular alarm.