---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/33203#article
headline: "33203: Messaging not allowed"
url: https://www.twilio.com/docs/api/errors/33203
inLanguage: en
dateModified: 2026-03-11T20:01:16.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 33203: Messaging not allowed

Log Type: APPLICATION

Log Level: ERROR

## Description

Raised whenever a Command from your SIM is received but not permitted.

### Possible causes

* The SIM that sent the Command, is not in status `ready` or `active`.
* The associated Rate Plan of the SIM does not have commands enabled.
* Breakout Commands from your SIMs are only permitted for Narrowband SIMs.

### Possible solutions

* While sending Commands from your SIM, verify that the SIM is either in status `ready` or `active`.
* While sending Commands from your SIM, ensure that the associated Rate Plan of the SIM has commands enabled.