---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/55555#article
headline: "55555: Invalid Instruction passed to TaskRouter"
url: https://www.twilio.com/docs/api/errors/55555
inLanguage: en
dateModified: 2026-03-11T20:43:38.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 55555: Invalid Instruction passed to TaskRouter

Log Type: APPLICATION

Log Level: ERROR

## Description

An invalid instruction was passed to TaskRouter when responding to a pending Reservation.

### Possible causes

* An invalid instruction was passed to TaskRouter.

### Possible solutions

* Ensure only valid instructions are being used. A list of valid instructions can be found at https://www.twilio.com/docs/taskrouter/api/reservations#action-update