---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/40135#article
headline: "40135: TaskRouter->Dequeue"
url: https://www.twilio.com/docs/api/errors/40135
inLanguage: en
dateModified: 2026-03-11T20:01:16.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 40135: TaskRouter->Dequeue

Log Level: ERROR

## Description

### Possible causes

* The Reservation has been moved to a non-Pending state.

### Possible solutions

* Make certain that the Reservation is currently Pending.

### Example

```bash
{
	"instruction": "dequeue",
	"to": "client:alice",
	"from": "18001234567",
	"post_work_activity_sid": "WA0123456789abcdef0123456789abcdef"
}
```