Create number group membership
Adds one project-owned phone number to a Number Group by phone-number ID. Use it to build or expand a sender pool after creating the group; this operation does not purchase or import the number. A phone number can belong to more than one group.
#### Permissions
The API token used to authenticate must have the following scope(s) enabled to make a successful request: _Numbers_.
[Learn more about API scopes](/docs/platform/your-signalwire-api-space).
Authentication
AuthorizationBasic
SignalWire Basic Authentication using Project ID and API Token.
The client sends HTTP requests with the Authorization header containing
the word Basic followed by a space and a base64-encoded string of project_id:token.
The project ID will be used as the username and the API token as the password.
Example:
```
Authorization: Basic base64(project_id:token)
```
Path parameters
NumberGroupId
Unique ID of the number group.
Request
This endpoint expects an object.
phone_number_id
The phone number ID to add to the group.
Response
The request has succeeded.
id
The unique identifier of the Number Group Membership on SignalWire. This can be used to delete the membership programmatically.
number_group_id
The unique identifier of the Number Group this membership is associated with.
phone_number
A representation of the phone number this membership is associated with.
created_at
The date and time when the membership was created.
updated_at
The date and time when the membership was last updated.
Errors
401
Unauthorized Error
404
Not Found Error
422
Unprocessable Entity Error
500
Internal Server Error