curl --request POST \
  --url https://api-eu.flexportal.io/v1/products/csv \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: multipart/form-data' \
  --header 'Tenant-ID: <tenant-id>' \
  --form csvFile='@example-file'

{
  "success": true,
  "message": "<string>",
  "created": 123,
  "updated": 123,
  "errors": [
    {
      "row": 123,
      "error": "<string>"
    }
  ]
}