How to reverse GST paid without invoice

This discussion addresses the challenge of reversing GST paid on income that was anticipated but never materialised due to a tenant vacating before an invoice could be issued. The user seeks advice on how to adjust the previously paid GST, specifically whether issuing a credit note against a cancelled invoice is a viable solution. Expert advice suggests issuing a credit note to reduce output liability, but the user raises concerns about the lack of a valid original invoice to support this.