Pending non post

Hello ME-, 

Welcome to the Community page 

This is not possible to do so as all invoices are posting. 

You could try using the Open invoice report that has invoices that are still open and haven't been paid,  or customise and filter the transaction list by the customer to just bring in invoices that are open for you. Filter on posting status (non posting), transaction type (invocies) and paid status (open).