# List Update Monitors' Data Sources

List all data sources available for update monitoring.

Endpoint: GET /v2/updatemonitors/referencedatasources
Version: 5
Security: apiKey

## Query parameters:

  - `featuresOn` (array)
    Features to be activated.
    Enum: "FETCH_ACTIVATION_STATUS"

## Response 200 fields (application/json):

  - `referenceDataSources` (array)
    List of Reference Data Sources.

  - `referenceDataSources.aleiPrefix` (string)
    The monitored Reference Data Source.
    Example: "VIES"

  - `referenceDataSources.technicalKey` (string)
    Technical key of the Reference Data Source.
    Example: "VIES"

  - `referenceDataSources.activationStatus` (string)
    Indicates whether the data source is active or inactive for the organization.
    Example: "ACTIVE"