---
title: "Changes to Subscribe to User Defined Messages for a given Call SID."
method: POST
path: "/2010-04-01/Accounts/{AccountSid}/Calls/{CallSid}/UserDefinedMessageSubscriptions.json"
---

# Changes to Subscribe to User Defined Messages for a given Call SID.

`POST /2010-04-01/Accounts/{AccountSid}/Calls/{CallSid}/UserDefinedMessageSubscriptions.json`

> Every recorded change to this endpoint, newest first.

## Timeline

Changed in 1 of 51 revisions.

- **2024-04-18** (v2010) `cf63f47f41aa` — 4 breaking

## Changes

- **2024-04-18** (v2010) `cf63f47f41aa` — 4 breaking
  - removed the enum value `DELETE` of the request property `Method`
  - removed the enum value `HEAD` of the request property `Method`
  - removed the enum value `PATCH` of the request property `Method`
  - removed the enum value `PUT` of the request property `Method`

---

[Operation](https://skmtc.dev/twilio/apis/api-v2010/docs/2010-04-01/Accounts/:AccountSid/Calls/:CallSid/UserDefinedMessageSubscriptions.json/post.md) · [API](https://skmtc.dev/twilio/apis/api-v2010.md) · [Page](https://skmtc.dev/twilio/apis/api-v2010/changes/2010-04-01/Accounts/:AccountSid/Calls/:CallSid/UserDefinedMessageSubscriptions.json/post)