PowerShell 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'

PowerShell Example

[Reflection.Assembly]::LoadFile("C:\myAssemblies\ChilkatDotNet47.dll")

$rest = New-Object Chilkat.Rest

#  URL: https://test-api.service.hmrc.gov.uk/organisations/vat/MY_HMRC_VRN/liabilities?from=2018-06-25&to=2019-02-17
$bTls = $true
$port = 443
$bAutoReconnect = $true
$success = $rest.Connect("test-api.service.hmrc.gov.uk",$port,$bTls,$bAutoReconnect)
if ($success -ne $true) {
    $("ConnectFailReason: " + $rest.ConnectFailReason)
    $($rest.LastErrorText)
    exit
}

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

$sbResponseBody = New-Object Chilkat.StringBuilder
$success = $rest.FullRequestNoBodySb("GET","/organisations/vat/MY_HMRC_VRN/liabilities?from=2018-06-25&to=2019-02-17",$sbResponseBody)
if ($success -ne $true) {
    $($rest.LastErrorText)
    exit
}

$respStatusCode = $rest.ResponseStatusCode
if ($respStatusCode -ge 400) {
    $("Response Status Code = " + $respStatusCode)
    $("Response Header:")
    $($rest.ResponseHeader)
    $("Response Body:")
    $($sbResponseBody.GetAsString())
    exit
}

$jsonResponse = New-Object Chilkat.JsonObject
$jsonResponse.LoadSb($sbResponseBody)

#  See the Online Tool for Generating JSON Parse Code

$i = 0
$count_i = $jsonResponse.SizeOfArray("liabilities")
while ($i -lt $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
}

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"
    }
  ]
}