Non reference invoice/bills not appearing in report

Hello

I am trying to reconcile the Outstanding report with Sundry Debtors and Sundry Creditors balance.

However there are quite a few ledgers where some invoices in the ledger don’t have an invoice reference and hence they have a reference called  ‘on Account’. Due to this, these invoices don’t appear in the outstanding report and hence I find it difficult to reconcile.

Please advise how I can see these invoices on the outstanding report?