# Bulk load preview

Endpoint: POST /bulk_loads/preview
Version: 3
Security: ApiKeyAuth

## Request fields (application/x-www-form-urlencoded):

  - `config` (object, required)
    bulk load config

  - `config.in` (object)

  - `config.in.connection_prop` (string)
    Example: connection_prop

  - `config.in.connection_secret` (string)
    Example: secret

  - `config.in.basic_prop` (string)
    Example: basic

  - `config.in.basic_secret` (string)
    Example: secret

  - `config.in.advanced_prop` (string)
    Example: advanced

  - `config.in.advanced_secret` (string)
    Example: secret

  - `config.in.type` (string)
    Example: some_type

  - `config.in.td_authentication_id` (integer)
    Example: 1234

  - `config.filters` (array)

  - `config.exec` (object)

  - `config.exec.type` (string)
    Example: some_type

  - `config.exec.basic_prop` (string)
    Example: basic

  - `config.exec.secret_prop` (string)
    Example: secret

  - `config.out` (object)

  - `config.out.type` (string)
    Example: some_type

  - `config.out.mode` (string)
    Example: mode

  - `config.out.plazma_dataset` (string)
    Example: plazma

  - `config.out.time_column` (string)
    Example: time

## Response 200 fields (application/json):

  - `schema` (array)

  - `records` (array)