---
title: resp.stale.is_error
summary: null
url: >-
  https://www.fastly.com/documentation/reference/vcl/variables/miscellaneous/resp-stale-is-error
---

**Type:** BOOL  
**Access:** read-only

**Available in:** all subroutines

Whether or not the selected response is a stale cache hit, as a result of a backend failure or an explicit `return(deliver_stale)`.

Also see `resp.stale` and `resp.stale.is-revalidating`.