# Insert Bulk Customers

Inserts multiple customers to the Master Data table.
The /loaddata operation is a very efficient and quick way to insert bulk data to the Master Data table.
The main advantage is its greater speed when loading thousands of records (compared to e.g. /integrate).

>Please note
> If no joinFields are provided in the request, then this operation will insert entire records. It means that in this case (without joinFields) with /loaddata it is not possible to update just some fields (for this use the /integrate endpoint instead). The source data must always contain the entire row’s content.

Endpoint: POST /loaddata/C
Security: basic, X-PriceFx-jwt

## Request fields (application/json):

  - `data` (object, required)

  - `data.header` (array, required)

  - `data.options` (object)

  - `data.options.detectJoinFields` (boolean)

## Response 200 fields (application/json):

  - `response` (object)

  - `response.node` (string)

  - `response.data` (array)

  - `response.status` (number)