Can't provide both a discount code and ID

{
  "error": {
    "type": "request_error",
    "code": "transaction_cannot_provide_both_discount_code_and_id",
    "detail": "Must provide either Discount ID OR Discount Code, not both",
    "documentation_url": "https://developer.paddle.com/errors/transactions/transaction_cannot_provide_both_discount_code_and_id",
    "errors": [
      {
        "field": "discount_id|discount_code",
        "message": "Must provide either Discount ID OR Discount Code, not both"
      }
    ]
  },
  "meta": {
    "request_id": "00000000-0000-0000-0000-000000000000"
  }
}