My order always return "Your order information is invalid" using "TamaraApiClient.CreateCheckout"

[ahmed-abdelrazek]

this the order json

{
  "Description": "Order #29b8ffe4-3579-4e77-a74f-af924ab7a3fa",
  "CountryCode": "SA",
  "Locale": "ar-SA",
  "DiscountAmount": {
    "Name": "Total Discount Amount",
    "Amount": {
      "Currency": "SAR",
      "Amount": 100
    }
  },
  "MerchantUrl": {
    "SuccessUrl": "https://example.com/",
    "FailureUrl": "https://example.com/",
    "CancelUrl": "https://example.com/",
    "NotificationUrl": "https://example.com/api/Payments/TammaraReceiveAuthoriseNotification"
  },
  "Platform": "Web",
  "IsMobile": false,
  "expiresInMinutes": 0,
  "RiskAssessment": null,
  "AdditionalData": null,
  "Id": "211",
  "PaymentType": "PAY_BY_INSTALMENTS",
  "Instalments": 4,
  "ReferenceId": "29b8ffe4-3579-4e77-a74f-af924ab7a3fa",
  "Consumer": {
    "FirstName": "ahmed",
    "LastName": "ahmed",
    "PhoneNumber": "201100000000",
    "Email": "email@ptit.com.sa",
    "NationalId": null,
    "DateOfBirth": null,
    "IsFirstOrder": null
  },
  "BillingAddress": null,
  "ShippingAddress": null,
  "TotalAmount": {
    "Currency": "SAR",
    "Amount": 50.6
  },
  "TaxAmount": {
    "Currency": "SAR",
    "Amount": 6.6
  },
  "ShippingAmount": null,
  "Items": [
    {
      "ReferenceId": "421",
      "Type": "Digital",
      "Name": "react Tickett",
      "Sku": "421",
      "ImageUrl": null,
      "Quantity": 1,
      "TaxAmount": {
        "Currency": "SAR",
        "Amount": 6.6
      },
      "TotalAmount": {
        "Currency": "SAR",
        "Amount": 50.6
      },
      "UnitPrice": {
        "Currency": "SAR",
        "Amount": 144
      },
      "DiscountAmount": {
        "Currency": "SAR",
        "Amount": 100
      }
    }
  ]
}