---
title: beresp.saintmode
summary: null
url: >-
  https://www.fastly.com/documentation/reference/vcl/variables/backend-response/beresp-saintmode
---

**Type:** RTIME  
**Access:** can only be set (cannot be read or unset)

**Available in:** fetch

Setting this variable marks the backend that was used for this request as 
unhealthy for the period of time specified.