$clientId = "XXXXXXXXX"
$password = "XXXXXXXX"
$tenantId = 'XXXXXXXXX'

$userPassword = ConvertTo-SecureString $password -AsPlainText -Force
$pscred = New-Object System.Management.Automation.PSCredential($clientId,$userPassword)  
Connect-AzAccount -Tenant $tenantId -Credential $pscred -ServicePrincipal

$token = (Get-AzAccessToken).Token


$Header = @{'Authorization' = "Bearer $token"; "Content-Type" = "application/json" }


$uri = "https://management.azure.com/providers/Microsoft.Subscription/subscriptions/XXXXXXXXXXXXXXX/providers/Microsoft.Authorization/roleAssignmentScheduleRequests?api-version=2020-10-01"

$response = Invoke-WebRequest -Headers $Header -Uri $uri -Method Get -UseBasicParsing

$method = "PUT"

$createURI =  "https://management.azure.com/providers/Microsoft.Subscription/subscriptions/XXXXXXXXXXXXXXXX/providers/Microsoft.Authorization/roleAssignmentScheduleRequests/093b7605-5062-4774-99d8-ab1e7f7cdc12?api-version=2020-10-01"

$body = '{
  "properties": {
    "principalId": "XXXXXXXXXX",
    "roleDefinitionId": "/subscriptions/XXXXXXXXXXX/providers/Microsoft.Authorization/roleDefinitions/b24988ac-6180-42a0-ab88-20f7382dd24c",
    "requestType": "AdminAssign",
    
  }
}'

$response = Invoke-WebRequest -Headers $Header -Uri $uri -Method $method -UseBasicParsing -Body $body


$scope = "/subscriptions/XXXXXXXXXX"
Get-AzRoleAssignmentSchedule -Scope $scope

$SubscriptionPIMID = (Get-AzureADMSPrivilegedResource -ProviderId 'AzureResources' -Filter "ExternalId eq '/subscriptions/XXXXX'").Id

$method = "GET "

$URI = 'https://management.azure.com/providers/Microsoft.Subscription/subscriptions/XXXXXXXXXXXXXX/providers/Microsoft.Authorization/roleAssignmentScheduleRequests?api-version=2020-10-01'

$response = Invoke-WebRequest -Headers $Header -Uri $uri -Method $method -UseBasicParsing