# Delete a specific User Defined Message Subscription.

**DELETE /2010-04-01/Accounts/{AccountSid}/Calls/{CallSid}/UserDefinedMessageSubscriptions/{Sid}.json**

Delete a specific User Defined Message Subscription.
Subscription for server-side application access to messages sent from the Voice SDK for an active Call.

## Servers
- https://api.twilio.com: https://api.twilio.com ()


## Authentication methods
- Account sid auth token


## Parameters

### Path parameters
- **AccountSid** (string)
  The SID of the [Account](https://www.twilio.com/docs/iam/api/account) that subscribed to the User Defined Messages.
- **CallSid** (string)
  The SID of the [Call](https://www.twilio.com/docs/voice/api/call-resource) the User Defined Message Subscription is associated with. This refers to the Call SID that is producing the User Defined Messages.
- **Sid** (string)
  The SID that uniquely identifies this User Defined Message Subscription.



## Responses
### 204
The resource was deleted successfully.


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