# Retrieve a username

Sends an email with username for every username associated with an email. Always returns a 200 success regardless of if email doesn’t exist in the clientID.

Endpoint: POST /username/retrieve
Version: 1.0.457.36910
Security: OAuth2

## Security:

  - `OAuth2` (unknown)
    oauth2

## Query parameters:

  - `clientID` (string, required)
    ID of the client.

  - `email` (string, required)
    Email of the forgotten credentials.

## Response 204:

  - `204` (unknown)
    Sends an email with username for every username associated with an email. Always returns a 200 success regardless of if email doesn’t exist in the clientID.

## Response 4XX:

  - `4XX` (unknown)
    Expected errors range from 400-409. Anything in the 5XX range indicates a server issue and should be reported to support.

## Response 4XX fields (application/json):

  - `StatusCode` (integer)
    Example: 404

  - `ErrorCode` (string)
    Example: NotFoundError

  - `Message` (string)
    Example: Object not found

  - `Data` (object)
    Example: {"ObjectType":"","ObjectID":""}