# Create a new Notification for the corresponding Challenge

**POST /v2/Services/{ServiceSid}/Entities/{Identity}/Challenges/{ChallengeSid}/Notifications**

Create a new Notification for the corresponding Challenge


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


## Authentication methods
- Account sid auth token


## Parameters

### Path parameters
- **ServiceSid** (string)
  The unique SID identifier of the Service.
- **Identity** (string)
  Customer unique identity for the Entity owner of the Challenge. This identifier should be immutable, not PII, length between 8 and 64 characters, and generated by your external system, such as your user's UUID, GUID, or SID. It can only contain dash (-) separated alphanumeric characters.
- **ChallengeSid** (string)
  The unique SID identifier of the Challenge.


### Body: application/x-www-form-urlencoded (object)

- **Ttl** (integer)
  How long, in seconds, the notification is valid. Can be an integer between 0 and 300. Default is 300. Delivery is attempted until the TTL elapses, even if the device is offline. 0 means that the notification delivery is attempted immediately, only once, and is not stored for future delivery.


## Responses
### 201
Created
#### Headers
- **Access-Control-Allow-Origin** (string)
  Specify the origin(s) allowed to access the resource
- **Access-Control-Allow-Methods** (string)
  Specify the HTTP methods allowed when accessing the resource
- **Access-Control-Allow-Headers** (string)
  Specify the headers allowed when accessing the resource
- **Access-Control-Allow-Credentials** (boolean)
  Indicates whether the browser should include credentials
- **Access-Control-Expose-Headers** (string)
  Headers exposed to the client

#### Body: application/json (object)
- **sid** (string | null)
  A 34 character string that uniquely identifies this Notification.
- **account_sid** (string | null)
  The unique SID identifier of the Account.
- **service_sid** (string | null)
  The unique SID identifier of the Service.
- **entity_sid** (string | null)
  The unique SID identifier of the Entity.
- **identity** (string | null)
  Customer unique identity for the Entity owner of the Challenge. This identifier should be immutable, not PII, length between 8 and 64 characters, and generated by your external system, such as your user's UUID, GUID, or SID. It can only contain dash (-) separated alphanumeric characters.
- **challenge_sid** (string | null)
  The unique SID identifier of the Challenge.
- **priority** (string | null)
  The priority of the notification. For `push` Challenges it's always `high` which sends the notification immediately, and can wake up a sleeping device.
- **ttl** (integer)
  How long, in seconds, the notification is valid. Max: 5 minutes
- **date_created** (string(date-time) | null)
  The date that this Notification was created, given in [ISO 8601](https://en.wikipedia.org/wiki/ISO_8601) format.


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