---
title: Changes to entity GUIDs for hosts instrumented with OpenTelemetry
source: https://docs.newrelic.com/whats-new/2024/02/whats-new-02-16-infra-otel-guids
---

On March 27, 2024, the `entity.guid` value for hosts captured by the OpenTelemetry collector will change. This change only affects customers who use OpenTelemetry to instrument their infrastructure hosts. 

## What's changing?

-   On March 27, 2024, a backend change will regenerate values assigned to `entity.guid` in our database.
-   This change applies to customers who use the OpenTelemetry agent for instrumenting hosts. This change doesn’t affect other hosts instrumented with our other agents.
-   If you’ve created alerts and custom dashboards that use a defined, hardcoded value for `entity.guid`, then those alerts and dashboards will stop working.

## Next steps

We recommend updating your dashboards and alert conditions ahead of the change using alternative attributes to identify your hosts. You can use these attributes instead: 

-   `host.name`
-   `host.id` 
-   `entity.name`

If you can't update your alert conditions or dashboards with alternative attributes, then we recommend updating `entity.guid` with the new value after the change on March 27, 2024.

For more information on entity GUIDs, refer to our documentation about [New Relic entities](https://docs.newrelic.com/docs/new-relic-solutions/new-relic-one/core-concepts/what-entity-new-relic).