How can I update my ABN? 05 August 2022 01:13 Updated Head to your Background Check (also found in the My Account menu) and click ABN. Click "Change ABN?" and follow the prompts. Click the matching ABN record and save your new ABN. Related articles How do I edit my Profile? Responding to a bad review What's the Police Check Badge? How do I close my account? How do I re-open my account? Comments 0 comments Please sign in to leave a comment.