---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/40151#article
headline: "40151: TaskRouter->Invalid instruction"
url: https://www.twilio.com/docs/api/errors/40151
inLanguage: en
dateModified: 2026-03-11T20:01:16.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 40151: TaskRouter->Invalid instruction

Log Type: APPLICATION

Log Level: ERROR

## Description

### Possible causes

* Instruction is not acceptable for transferred tasks
* Internal Twilio API error.

### Possible solutions

* Make certain that instruction is accept, reject, conference, or supervise

### Example

```bash
{
	"instruction": "conference"
}
```