How to check if a payment is delayed, pending, or batched in Global Pay using the Ecommerce API?

Question

I'm using the Hosted Payment Page (HPP) solution from the Global Pay Ecommerce API to make payments: https://developer.globalpay.com/ecommerce/hosted-solution/HPP-Guide#hpp

Does anyone know how to determine if payments are in the delayed, pending or batched state in Global Pay using the Ecommerce API?

Example payments in Global Pay

I've tried using the ReportingService.TransactionDetail() method found in the Global Pay .NET SDK tests, but the returned TransactionSummary didn't contain the payment state.

Global Pay test code: https://github.com/globalpayments/dotnet-sdk/blob/master/tests/GlobalPayments.Api.Tests/GpEcom/GpEcomReportingTest.cs

My code:

var service = new HostedService(new GpEcomConfig 
{ 
    MerchantId = "merchantid", 
    AccountId = "accountid", 
    SharedSecret = "secret", 
    ServiceUrl = https://api.sandbox.realexpayments.com/epage-remote.cgi, 
    HostedPaymentConfig = new HostedPaymentConfig { Version = "2" } 
}); 

var transactionSummary = ReportingService.TransactionDetail("bb80e964-8f0e-4a67-90d9-78a617fde3bb").Execute();

Example transaction summary: Example transaction summary

I can see a similar question here, but it doesn't have any answers.