You need to authorise MYOB for tax lodgements even if you have previously authorised MYOB for other ATO related services, such as for STP reporting using MYOB Essentials or AccountRight. 

If you've forgotten the Software ID , you can that appeared when you set up your agent details, here's how to get a new one: Go to Click Settings on the Tax settings page, click the [...] icon next to the agent and choose Show ID.

Note that this : This ID changes every time you show it. If you select the Show ID option after you've authorised MYOB, you'll need to reauthorise MYOB by phone or online.

 Make sure you have the agent's Software ID handy, and call the ATO on 1300 852 232.

1. Log in to the ATO's Access Manager (https://am.ato.gov.au/).
   
   
2. Click My hosted SBR software services in the left-hand menu.
   
   
   
   
3. Click Notify the ATO of your hosted service.
   
   
   
   
4. Type "MYOB" in the service provider name field, then click Search.
   
   
   
   
5. Click the ABN link for MYOB AUSTRALIA PTY LTD.
   
   
6. Paste or type your Software ID in the Add Software IDs field and click Next.
   
   
   
   
7. Click Save.