Can I ship without a suburb with Auspost?

Hi there

Just had a buyer purchase An item and I'm using EBay label printer satchels and it requires a suburb but the customer didn't put in their suburb.

I've ebay messaged the buyer asking for their suburb.

I was wondering do I need to enter the suburb to shop to the customer or is address and zip ok?

Should I wait for buyer to email me back or post without the suburb?

Thanks for the help