Xero API Bank Transaction API Request with incorrect validation on field Type

Xero Bank Transaction API Request

// Got the request and response messages via Xero API History on API calls.

// Request message
{"BankTransactions":[{"Type":"RECEIVE","Contact":{"ContactID":"fc6cb299-ea76-4bc9-881d-bbd71db9a60f","ContactStatus":"ACTIVE","Name":"First Thai Food","EmailAddress":"","BankAccountDetails":"","Addresses":[{"City":"","Region":"","PostalCode":"","Country":"","AddressType":"STREET"},{"City":"","Region":"","PostalCode":"","Country":"","AddressType":"POBOX"}],"Phones":[{"PhoneNumber":"","PhoneAreaCode":"","PhoneCountryCode":"","PhoneType":"DEFAULT"},{"PhoneNumber":"","PhoneAreaCode":"","PhoneCountryCode":"","PhoneType":"DDI"},{"PhoneNumber":"","PhoneAreaCode":"","PhoneCountryCode":"","PhoneType":"FAX"},{"PhoneNumber":"","PhoneAreaCode":"","PhoneCountryCode":"","PhoneType":"MOBILE"}],"DefaultCurrency":"SGD"},"LineItems":[{"Description":"Employee lunch","Quantity":1,"UnitAmount":32,"AccountCode":"461","TaxType":"INPUT","TaxAmount":2.09,"LineAmount":32}],"BankAccount":{"AccountID":"617b2867-3e64-45ed-a40b-e6dd72106def"},"IsReconciled":true,"Date":"2018-01-29T00:00:00.000Z","Reference":"","CurrencyCode":"SGD","CurrencyRate":"1","Status":"AUTHORISED","LineAmountTypes":"Inclusive","SubTotal":29.91,"TotalTax":2.09,"Total":32,"BankTransactionID":"a8910f79-c870-4dae-85bc-a4d0f9ed12fa","HasAttachments":false}]}

// Response message
{
  "ErrorNumber": 10,
  "Type": "ValidationException",
  "Message": "A validation exception occurred",
  "Elements": [
    {
      "BankTransactionID": "a8910f79-c870-4dae-85bc-a4d0f9ed12fa",
      "BankAccount": {
        "AccountID": "617b2867-3e64-45ed-a40b-e6dd72106def",
        "ValidationErrors": []
      },
      "Type": "CASHREC",
      "Reference": "",
      "IsReconciled": true,
      "CurrencyRate": 1.000000,
      "HasAttachments": false,
      "Contact": {
        "ContactID": "fc6cb299-ea76-4bc9-881d-bbd71db9a60f",
        "ContactStatus": "ACTIVE",
        "Name": "First Thai Food",
        "EmailAddress": "",
        "BankAccountDetails": "",
        "Addresses": [
          {
            "AddressType": "STREET",
            "City": "",
            "Region": "",
            "PostalCode": "",
            "Country": "",
            "ValidationErrors": []
          },
          {
            "AddressType": "POBOX",
            "City": "",
            "Region": "",
            "PostalCode": "",
            "Country": "",
            "ValidationErrors": []
          }
        ],
        "Phones": [
          {
            "PhoneType": "DEFAULT",
            "PhoneNumber": "",
            "PhoneAreaCode": "",
            "PhoneCountryCode": "",
            "ValidationErrors": []
          },
          {
            "PhoneType": "DDI",
            "PhoneNumber": "",
            "PhoneAreaCode": "",
            "PhoneCountryCode": "",
            "ValidationErrors": []
          },
          {
            "PhoneType": "FAX",
            "PhoneNumber": "",
            "PhoneAreaCode": "",
            "PhoneCountryCode": "",
            "ValidationErrors": []
          },
          {
            "PhoneType": "MOBILE",
            "PhoneNumber": "",
            "PhoneAreaCode": "",
            "PhoneCountryCode": "",
            "ValidationErrors": []
          }
        ],
        "ContactGroups": [],
        "DefaultCurrency": "SGD",
        "ContactPersons": [],
        "HasValidationErrors": false,
        "ValidationErrors": []
      },
      "DateString": "2018-01-29T00:00:00",
      "Date": "\/Date(1517184000000)\/",
      "Status": "AUTHORISED",
      "LineAmountTypes": "Inclusive",
      "LineItems": [
        {
          "Description": "Employee lunch",
          "UnitAmount": 32.0,
          "TaxType": "INPUT",
          "TaxAmount": 2.09,
          "LineAmount": 32.00,
          "AccountCode": "461",
          "Tracking": [],
          "Quantity": 1.0000,
          "ValidationErrors": []
        }
      ],
      "SubTotal": 29.91,
      "TotalTax": 2.09,
      "Total": 32.00,
      "CurrencyCode": "SGD",
      "ValidationErrors": [
        {
          "Message": "The Type field is not valid. This must be either 'SPEND', 'RECEIVE', 'SPEND-PREPAYMENT', 'RECEIVE-PREPAYMENT', 'SPEND-OVERPAYMENT', or 'RECEIVE-OVERPAYMENT'."
        }
      ]
    }
  ]
}