# Start a bulk upload

Start processing a bulk upload with a given upload ID. Allows choosing whether to overwrite existing data or not.

This endpoint validates constraint on the uploaded files: 
* Less than 100 files can be uploaded at a time
* Total size of all files must be less than 2GB

Note: only one upload can be in progress for a given supplier at a time.
If you try to start an upload for a supplier that already has an upload in progress,
you will get a '429 Too Many Requests' error, and will have to retry later.


Endpoint: POST /v1/bulk-uploads/start
Version: v1
Security: bearerAuth

## Request fields (application/json):

  - `uploadId` (string, required)
    ID of the upload to initiate

  - `overwrite` (boolean)
    Whether to overwrite existing data

## Response 202 fields (application/json):

  - `status` (string)
    Status of the initiation request

  - `uploadId` (string)
    ID of the initiated upload

  - `message` (string)
    Success message