# Insert Bulk Seller Extensions

Inserts multiple product extensions to the Master Data table.
The name (a name of the category) and sku must be provided for each record in the header and data object within the request body.
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).
Use the ISO 8601 date format (YYYY-MM-DD) if a date is included in the table.


>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.

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

## Request fields (application/json):

  - `data` (object, required)

  - `data.data` (array, required)
    The data fields. Appearing in same order as specified in header list

  - `data.header` (array, required)
    The header fields.

  - `data.options` (object)

  - `data.options.detectJoinFields` (boolean)

  - `data.options.joinFields` (array)
    A list of fields (that also need to appear in header and data) that make up the business key.


## Response 200 fields