Azure Advisor API - receiving 404

Hi,

I'm trying to create an Azure Advisor Recommendation digest using the API by following this process: https://video2.skills-academy.com/en-us/rest/api/advisor/configurations/create-in-subscription?tabs=HTTP

I'm using Powershell and Azure modules to interact with the REST API but I'm getting a 404. I've also tried through the "try it" link on that documentation page (where I can select my subscription from a dropdown list after I've authenticated) and I get the same issue.

My code is something like this:

$azContext = Get-AzContext
$azProfile = [Microsoft.Azure.Commands.Common.Authentication.Abstractions.AzureRmProfileProvider]::Instance.Profile
$profileClient = New-Object -TypeName Microsoft.Azure.Commands.ResourceManager.Common.RMProfileClient -ArgumentList ($azProfile)
$token = $profileClient.AcquireAccessToken($azContext.Subscription.TenantId)
$authHeader = @{
    'Content-Type'='application/json'
    'Authorization'='Bearer ' + $token.AccessToken
}


$advisorDigestBody = @{

  "properties" = @{
      "lowCpuThreshold" = 5
      "duration" = "7"
      "exclude" = false
      "digests" = @(
        @{
          "name" = "test-digest"
          "actionGroupResourceId" = "/subscriptions/XXXXXXX-XXXX-XXXXXX-XXXXXX-XXXXX/resourceGroups/rg01/providers/Microsoft.Insights/actiongroups/my-action-group-01"
          "frequency" = 30
          "categories" = @(
            "Cost"
          )
        "language" = "en"
        "state" = "Active"
        }
      )
    }
  } | ConvertTo-Json -Depth 5


$createRGUri = "https://management.azure.com/subscriptions/XXXXXXX-XXXX-XXXXXX-XXXXXX-XXXXX/resourceGroups/rg01/providers/Microsoft.Advisor/configurations/default?api-version=2023-01-01"


Invoke-RestMethod -Uri $createRGUri -Method Put -Headers $authHeader -Body $advisorDigestBody

It's possibly I'm just not using the right kind of call to the API to do what I need, but I can't seem to get around this 404 issue. The Subscription and Resource Group definitely exist and my account has access to them. I can see them in the portal. I ran the Set-AZContext command before putting my script together so I'm also targetting the subscription as well.

Any ideas where I'm going wrong?