function Get-Request
{
    <#
    .SYNOPSIS
 This function is used to return a list of requests. If RequestID is specified then a single request is returned. If RequestID is ommited then all requests assigned to the specified filter are returned. The filter will default to All Requests if one is not specified.
    .DESCRIPTION
 Get a list of Requests
    .EXAMPLE
 Get-Request -SdpUri "http://sdp.domain.com" -ApiKey "1234567A-2AB0-12A3-A123-1234567890AB" -RequestID 1234
    .PARAMETER RequestID
    The RequestID is the integer assigned to a "ticket" automatically by service desk plus
    .PARAMETER Filter
    The Request View Filter. These filters can be created in SDP. To find the filter name, Click on the ADMIN tab in SDP. Under General Settings click API, and Documentation.

 In the new Tab click "Requests" then "View Requests Filters", then "Try now". This parameter accepts the VIEWID

    .PARAMETER ApiKey
    This parameter is the API Key assigned to each technician. This serves as authentication to Service Desk Plus

 .PARAMETER Limit
    This parameter limits the number of returned requests. the default is 50
    .PARAMETER SdpUri
    This is the URI for Service Desk Plus

    #>
    [CmdletBinding()]
    param
    (
        [Parameter(Mandatory=$false, ValueFromPipelineByPropertyName=$true, Position=0)]
        [alias ("id")]
        [Int32]
        $RequestID=$null,
        [Parameter(Mandatory=$false, ValueFromPipelineByPropertyName=$true, Position=1)]
        [String]
        $Filter = "All_Requests",
        [Parameter(Mandatory=$true, ValueFromPipelineByPropertyName=$true, Position=2)]
        [String]
        $ApiKey,
        [Parameter(Mandatory=$true, ValueFromPipelineByPropertyName=$true, Position=3)]
        [String]
        $SdpUri,
        [Parameter(Mandatory=$false)]
        [String]
        $limit = 50
    )
    begin
    {
        if ($SdpUri[$SdpUri.Length -1] -eq "/") { $Uri = $SdpUri + "sdpapi/request" }
        else { $Uri = $SdpUri + "/sdpapi/request" }
    }
    process
    {
        if ($RequestID -gt 0)
        {
            $Uri = $Uri + "/" + $RequestID
            $Uri = $Uri + "?format=json&OPERATION_NAME=GET_REQUEST&TECHNICIAN_KEY=$ApiKey"
            $result = Invoke-RestMethod -Method Get -Uri $Uri
            $result
        }
        else
        {
            $Parameters = @{
                "operation" = @{
                    "details" = @{
                        "from" = "0";
                        "limit" = $limit;
                        "filterby" = $filter
                    }
               }
            }

            $input_data = $Parameters | ConvertTo-Json -Depth 50
            $Uri = $Uri + "?format=json&OPERATION_NAME=GET_REQUESTS&INPUT_DATA=$input_data&TECHNICIAN_KEY=$ApiKey"
            $result = Invoke-RestMethod -Method Get -Uri $Uri
            $result
        }
    }
}