---
title: "Changes to Register SIM cards"
method: POST
path: "/actions/register/sim_cards"
---

# Changes to Register SIM cards

`POST /actions/register/sim_cards`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 2 of 89 revisions.

- **2026-10-21** `67df31283a8a`: 1 breaking, 1 info
- **2026-10-15** `a72569d69430`: 1 info

## Changes

- **2026-10-21** `67df31283a8a`: 1 breaking, 1 info
  - the `errors/items/code` response's property type changed from `integer` to `string`, and format from `int32` to no format for status `401`
  - added the optional property `errors/items/description` to the response with the `401` status
- **2026-10-15** `a72569d69430`: 1 info
  - added the media type `application/json` for the response with the status `401`

---

[Operation](https://skmtc.dev/team-telnyx/apis/telnyx-api/docs/actions/register/sim_cards/post.md) - [API](https://skmtc.dev/team-telnyx/apis/telnyx-api.md) - [Page](https://skmtc.dev/team-telnyx/apis/telnyx-api/changes/actions/register/sim_cards/post)