是的，您可以通过PowerShell更新Azure AD应用程序的清单。

特别是为了添加应用程序角色，这是一个PowerShell脚本。

如果您在创建新应用程序时尝试执行此操作，请使用New-AzureADApplication代替Set-AzureADApplication。

Connect-AzureAD -TenantId <Tenant GUID>

# Create an application role of given name and description
Function CreateAppRole([string] $Name, [string] $Description)
{
    $appRole = New-Object Microsoft.Open.AzureAD.Model.AppRole
    $appRole.AllowedMemberTypes = New-Object System.Collections.Generic.List[string]
    $appRole.AllowedMemberTypes.Add("User");
    $appRole.DisplayName = $Name
    $appRole.Id = New-Guid
    $appRole.IsEnabled = $true
    $appRole.Description = $Description
    $appRole.Value = $Name;
    return $appRole
}

# ObjectId for application from App Registrations in your AzureAD
$appObjectId = "<Your Application Object Id>"
$app = Get-AzureADApplication -ObjectId $appObjectId
$appRoles = $app.AppRoles
Write-Host "App Roles before addition of new role.."
Write-Host $appRoles

$newRole = CreateAppRole -Name "MyNewApplicationRole" -Description "This is my new Application Role"
$appRoles.Add($newRole)

Set-AzureADApplication -ObjectId $app.ObjectId -AppRoles $appRoles