Public/Set/Set-NinjaOneDeviceCustomFields.ps1

function Set-NinjaOneDeviceCustomFields {
    <#
        .SYNOPSIS
            Sets the value of the specified device custom fields.
        .DESCRIPTION
            Sets the value of the specified device custom fields using the NinjaOne v2 API.
        .FUNCTIONALITY
            Device Custom Fields
        .OUTPUTS
            A powershell object containing the response.
        .EXAMPLE
            PS> Set-NinjaOneDeviceCustomFields -deviceId 1 -customFields @{ CustomField1 = 'Value1'; CustomField2 = 'Value2' }
             
            Set `CustomField1` to `Value1` and `CustomField2` to `Value2` respectively for the device with id 1.
        .LINK
            https://docs.homotechsual.dev/modules/ninjaone/commandlets/Set/devicecustomfields
    #>

    [CmdletBinding(SupportsShouldProcess = $true, ConfirmImpact = 'Medium')]
    [OutputType([Object])]
    [Diagnostics.CodeAnalysis.SuppressMessageAttribute('PSReviewUnusedParameter', '', Justification = 'Uses dynamic parameter parsing.')]
    Param(
        # The device to set the custom field value(s) for.
        [Parameter(Mandatory, Position = 0, ValueFromPipeline, ValueFromPipelineByPropertyName)]
        [Alias('id')]
        [Int]$deviceId,
        # The custom field(s) body object.
        [Parameter(Mandatory, Position = 1, ValueFromPipelineByPropertyName)]
        [Alias('customFields', 'body')]
        [Object]$deviceCustomFields
    )
    try {
        $Device = Get-NinjaOneDevice -deviceId $deviceId
        if ($Device) {
            Write-Verbose ('Setting custom fields for device {0}.' -f $Device.SystemName)
            $Resource = ('v2/device/{0}/custom-fields' -f $deviceId)
        } else {
            throw ('Device with id {0} not found.' -f $deviceId)
        }
        $RequestParams = @{
            Resource = $Resource
            Body = $deviceCustomFields
        }
        if ($PSCmdlet.ShouldProcess(('Custom Fields for {0}' -f $Device.SystemName), 'Set')) {
            $CustomFieldUpdate = New-NinjaOnePATCHRequest @RequestParams
            if ($CustomFieldUpdate -eq 204) {
                $OIP = $InformationPreference
                $InformationPreference = 'Continue'
                Write-Information ('Custom fields for {0} updated successfully.' -f $Device.SystemName)
                $InformationPreference = $OIP
            }
        }
    } catch {
        New-NinjaOneError -ErrorRecord $_
    }
}