# Retrieve a customer's lead source

Retrieves lead source data for a customer with a specified ID.
A lead source is the marketing campaign that generates customer interaction, a sale, or a trial.
For more information, see [Lead source attribution](https://www.rebilly.com/docs/dev-docs/customers/#lead-source-attribution).

Endpoint: GET /customers/{id}/lead-source
Version: latest
Security: SecretApiKey, JWT

## Security:

  - `SecretApiKey` (unknown)
    apiKey in header REB-APIKEY

  - `JWT` (unknown)
    http bearer JWT

## Path parameters:

  - `id` (string, required)
    ID of the resource.

## Response 200:

  - `200` (unknown)
    Lead source retrieved.

## Response 200 fields (application/json):

  - `medium` (string | null)
    Category of the lead source traffic.
For example, the medium could be organic search, Google ads, Display ads, and so on.

  - `source` (string | null)
    Domain, platform, or channel from which the lead source originates.

  - `campaign` (string | null)
    Campaign name of the lead source.

  - `term` (string | null)
    Term associated with a lead source.

  - `content` (string | null)
    Content contained in the lead source content.
For example, content could be graphics, video, and so on.

  - `affiliate` (string | null)
    Individual or entity that is affiliated with the lead source.

  - `subAffiliate` (string | null)
    Individual or entity that is associated with a lead source affiliate.
In other products, this field may also be referred to as sub ID or click ID in some.

  - `salesAgent` (string | null)
    Name of the sales agent associated with the lead source.

  - `clickId` (string | null)
    ID of the lead source click.
This value is passed in the ad click URL for tracking and campaign attribution.

  - `path` (string | null)
    URL from which the lead source originates.

  - `referrer` (string | null)
    Lead source [`referrer` URL](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Referer).
    Example: https://www.rebilly.com

  - `createdTime` (string)
    Date and time when the resource is created.
This value is set automatically when the resource is created.

  - `updatedTime` (string)
    Date and time when the resource is updated.
This value is set automatically when the resource is updated.

  - `_links` (array)
    Related links.

  - `_links.href` (string)
    Link URL.

  - `_links.rel` (string)
    Type of link.
    Enum: "self", "customer"

  - `original` (object)
    Lead source information.

## Response 401:

  - `401` (unknown)
    Unauthorized access.
Invalid credentials used.

## Response 401 fields (application/json):

  - `status` (integer)
    HTTP status code.

  - `type` (string)
    Problem type in the form of a [URI](https://tools.ietf.org/html/rfc3986) reference.
It should provide human-readable documentation for the problem type.
When this member is not present, its value is assumed to be "about:blank".

  - `title` (string)
    Short, human-readable summary of the problem type.
Other than for the purposes of localization, this should not change from occurrence to occurrence of the problem.

  - `detail` (string)
    Human-readable explanation that is specific to this occurrence of the problem.

  - `instance` (string)
    URI reference that identifies the specific occurrence of the problem.
It may or may not yield further information if dereferenced.

## Response 403:

  - `403` (unknown)
    Access forbidden.
If the organization requires multi-factor authentication (MFA) and the session has not passed MFA, `error` is `mfa_required`.

## Response 403 fields (application/json):

  - `status` (integer)
    HTTP status code.

  - `error` (string)
    Message that describes why the request is forbidden.
Most responses use a descriptive message, such as `Not allowed to change security settings`.
If the organization requires multi-factor authentication (MFA) and MFA verification has not been completed for the session, this value is `mfa_required`.
If the request sets `requireMfa` to `true` and MFA verification has not been completed for the session, this value is `mfa_required_for_caller`.

  - `type` (string)
    Problem type in the form of a [URI](https://tools.ietf.org/html/rfc3986) reference.
It should provide human-readable documentation for the problem type.
When this member is not present, its value is assumed to be "about:blank".

  - `title` (string)
    Short, human-readable summary of the problem type.
Other than for the purposes of localization, this should not change from occurrence to occurrence of the problem.

  - `detail` (string)
    Human-readable explanation that is specific to this occurrence of the problem.

  - `instance` (string)
    URI reference that identifies the specific occurrence of the problem.
It may or may not yield further information if dereferenced.

## Response 404:

  - `404` (unknown)
    Resource not found.

## Response 404 fields (application/json):

  - `status` (integer)
    HTTP status code.

  - `type` (string)
    Problem type in the form of a [URI](https://tools.ietf.org/html/rfc3986) reference.
It should provide human-readable documentation for the problem type.
When this member is not present, its value is assumed to be "about:blank".

  - `title` (string)
    Short, human-readable summary of the problem type.
Other than for the purposes of localization, this should not change from occurrence to occurrence of the problem.

  - `detail` (string)
    Human-readable explanation that is specific to this occurrence of the problem.

  - `instance` (string)
    URI reference that identifies the specific occurrence of the problem.
It may or may not yield further information if dereferenced.