---
title: Fastly Terraform Provider 9.4.0
summary: null
url: >-
  https://www.fastly.com/documentation/reference/changes/2026/07/terraform-provider-fastly-9.4.0
---

View this release on [GitHub](https://github.com/fastly/terraform-provider-fastly/releases/tag/v9.4.0).

* * *

### ENHANCEMENTS:

- feat(tls_subscription_validation): expose computed `certificate_id`, allowing issuance-dependent resources to be chained in a single apply ([#1345](https://github.com/fastly/terraform-provider-fastly/issues/1345))
- feat(tls/subscription): include subscription ID and domains in `fastly_tls_subscription` API error messages so failing resources can be identified when managing many subscriptions ([#1344](https://github.com/fastly/terraform-provider-fastly/pull/1344))

### BUG FIXES:

- fix(logging): Validate logging `format` length (max 12288 characters) at plan/validate time instead of failing at apply time ([#1342](https://github.com/fastly/terraform-provider-fastly/pull/1342))
- fix(tls_subscription): allow `configuration_id` attribute changes to be updated without requiring a resource replacement ([#1353](https://github.com/fastly/terraform-provider-fastly/pull/1353))
- fix(tls_subscription_validation): key resource validity on certificate presence instead of `issued` state, so subscriptions in `renewing` state no longer destroy/recreate the validation resource on refresh ([#1345](https://github.com/fastly/terraform-provider-fastly/issues/1345))
- fix(tls_activation): fail fast with an actionable error when `certificate_id` is empty (certificate not yet issued) instead of an opaque API 400; document that managed subscription domains are auto-activated by Fastly and must not be paired with `fastly_tls_activation` ([#1345](https://github.com/fastly/terraform-provider-fastly/issues/1345))