---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/50379#article
headline: "50379: TimeToInactive format is invalid"
url: https://www.twilio.com/docs/api/errors/50379
inLanguage: en
dateModified: 2026-03-11T20:43:38.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 50379: TimeToInactive format is invalid

Log Type: APPLICATION

Log Level: ERROR

## Description

'TimeToInactive' parameter supports values which are ISO8601 durations.

### Possible causes

* 'TimeToInactive' parameter value is not ISO8601 duration.

### Possible solutions

* Use ISO8601 duration format value for 'TimeToInactive' parameter. For example PT0S, PT10M, P1D etc..