Payment gateway attribute when generating label

Legacy REST API
6

Thanks for clarifying that @Ricardo !
So based on the example on apiary we currently have this payload when we request the label to your endpoint:

{
  "shipping_name": "Manual Order Shipping Method",
  "to_address": {
    "city": "SAN FRANCISCO",
    "state": "CA",
    "zip": "94105",
    "name": "test order",
    "address_2": "",
    "country": "US",
    "address_1": "123 MAIN ST",
    "email": "none@none.com",
    "phone": "",
    "company_name": ""
  },
  "shipping_method": "My Carrier",
  "order_id": "83478763",
  "packages": [
    {
      "width": 10,
      "weight_in_oz": 11,
      "length": 10,
      "line_items": [
        {
          "tariff_code": "0",
          "price": "0.00",
          "customs_description": null,
          "customs_value": "0.00",
          "line_item_id": "225458557",
          "barcode_exists": "0",
          "partner_line_item_id": "MO114-265348960",
          "sku": "yellow-kit",
          "barcode_scanned": "0",
          "name": "Yellow Kit",
          "ignore_on_customs": false,
          "product_name": "Yellow Kit",
          "quantity": "2"
        }
      ],
      "height": 10
    }
  ],
  "order_number": "MO114",
  "partner_order_id": "MO114",
  "from_address": {
    "city": "Garnerville",
    "state": "NY",
    "zip": "10923",
    "name": "ShipHero Apparel",
    "address_2": "",
    "country": "US",
    "address_1": "123 Main St",
    "email": "hello@shiphero.com",
    "phone": "11111111111",
    "company_name": ""
  }
}

And this request would be to add one field called, for example, "payment_gateway": "Payment Method1" and will be on the payload here:

{
  "shipping_name": "Manual Order Shipping Method",
  "to_address": {
    "city": "SAN FRANCISCO",
    "state": "CA",
    "zip": "94105",
    "name": "test order",
    "address_2": "",
    "country": "US",
    "address_1": "123 MAIN ST",
    "email": "none@none.com",
    "phone": "",
    "company_name": ""
  },
  "shipping_method": "My Carrier",
  "payment_gateway": "Payment Method1"
  "order_id": "83478763",
  "packages": [
    {
      "width": 10,
      "weight_in_oz": 11,
      "length": 10,
      "line_items": [
        {
          "tariff_code": "0",
          "price": "0.00",
          "customs_description": null,
          "customs_value": "0.00",
          "line_item_id": "225458557",
          "barcode_exists": "0",
          "partner_line_item_id": "MO114-265348960",
          "sku": "yellow-kit",
          "barcode_scanned": "0",
          "name": "Yellow Kit",
          "ignore_on_customs": false,
          "product_name": "Yellow Kit",
          "quantity": "2"
        }
      ],
      "height": 10
    }
  ],
  "order_number": "MO114",
  "partner_order_id": "MO114",
  "from_address": {
    "city": "Garnerville",
    "state": "NY",
    "zip": "10923",
    "name": "ShipHero Apparel",
    "address_2": "",
    "country": "US",
    "address_1": "123 Main St",
    "email": "hello@shiphero.com",
    "phone": "11111111111",
    "company_name": ""
  }
}

Is that correct?