---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/25013#article
headline: "25013: Updating the username is unsupported"
url: https://www.twilio.com/docs/api/errors/25013
inLanguage: en
dateModified: 2026-06-09T11:00:42.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 25013: Updating the username is unsupported

Log Type: APPLICATION

Log Level: ERROR

## Description

You attempted to update a username value on a resource that does not support username changes after creation. Use a different updatable field if you need to modify the user record.

### Possible causes

* Your request includes a username field in an update operation.
* The resource supports creating a username but does not support changing it later.
* Your application is reusing a create payload for an update request and includes immutable fields.

### Possible solutions

* Remove the username field from the update request and submit only fields that the resource allows you to change.
* Review the update operation for the resource you are using and confirm which parameters are writable.
* If you need a different username, create a new user or account record with the correct value and migrate your application to use that record.
* Update your application logic to treat username values as immutable after creation.

#### Additional resources

* [Identity and Access Management overview](/docs/iam)