VB.NET HMRC VAT MTD: Retrieve VAT Liabilities

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Retrieve VAT liabilities

Documentation: https://developer.service.hmrc.gov.uk/api-documentation/docs/api/service/vat-api/1.0#_retrieve-vat-liabilities_get_accordion

CURL Command

curl -X GET  https://test-api.service.hmrc.gov.uk/organisations/vat/MY_HMRC_VRN/liabilities?from=2018-06-25&to=2019-02-17 \
-H 'Authorization: Bearer HMRC_ACCESS_TOKEN' \
-H 'Accept: application/vnd.hmrc.1.0+json'

VB.NET Example

Dim rest As New Chilkat.Rest
Dim success As Boolean

'  URL: https://test-api.service.hmrc.gov.uk/organisations/vat/MY_HMRC_VRN/liabilities?from=2018-06-25&to=2019-02-17
Dim bTls As Boolean = True
Dim port As Integer = 443
Dim bAutoReconnect As Boolean = True
success = rest.Connect("test-api.service.hmrc.gov.uk",port,bTls,bAutoReconnect)
If (success <> True) Then
    Debug.WriteLine("ConnectFailReason: " & rest.ConnectFailReason)
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
End If


rest.AddHeader("Authorization","Bearer HMRC_ACCESS_TOKEN")
rest.AddHeader("Accept","application/vnd.hmrc.1.0+json")

Dim sbResponseBody As New Chilkat.StringBuilder
success = rest.FullRequestNoBodySb("GET","/organisations/vat/MY_HMRC_VRN/liabilities?from=2018-06-25&to=2019-02-17",sbResponseBody)
If (success <> True) Then
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
End If

Dim respStatusCode As Integer = rest.ResponseStatusCode
If (respStatusCode >= 400) Then
    Debug.WriteLine("Response Status Code = " & respStatusCode)
    Debug.WriteLine("Response Header:")
    Debug.WriteLine(rest.ResponseHeader)
    Debug.WriteLine("Response Body:")
    Debug.WriteLine(sbResponseBody.GetAsString())
    Exit Sub
End If


Dim jsonResponse As New Chilkat.JsonObject
jsonResponse.LoadSb(sbResponseBody)

'  See the Online Tool for Generating JSON Parse Code
Dim i As Integer
Dim count_i As Integer
Dim taxPeriodFrom As String
Dim taxPeriodTo As String
Dim type As String
Dim originalAmount As String
Dim outstandingAmount As String
Dim due As String

i = 0
count_i = jsonResponse.SizeOfArray("liabilities")
While i < count_i
    jsonResponse.I = i
    taxPeriodFrom = jsonResponse.StringOf("liabilities[i].taxPeriod.from")
    taxPeriodTo = jsonResponse.StringOf("liabilities[i].taxPeriod.to")
    type = jsonResponse.StringOf("liabilities[i].type")
    originalAmount = jsonResponse.StringOf("liabilities[i].originalAmount")
    outstandingAmount = jsonResponse.StringOf("liabilities[i].outstandingAmount")
    due = jsonResponse.StringOf("liabilities[i].due")
    i = i + 1
End While

Sample JSON Response Body

{
  "liabilities": [
    {
      "taxPeriod": {
        "from": "2018-04-06",
        "to": "2018-07-06"
      },
      "type": "VAT ...",
      "originalAmount": 6000.3,
      "outstandingAmount": 100.51,
      "due": "2018-07-06"
    }
  ]
}