Hi ANoakes,
Thanks for your post, and welcome here to the Community Forum. Thank you for bringing your concern to us, and we apologize for any inconvenience this has caused.
The ATO error code CMN.ATO.PAYEVNTEMP.000282 relates to a terminated employee. To fix the error, kindly go to the STP reporting center > Employee terminations tab and make sure that the terminated employees have a termination reason, and the termination date is after the start date.
To update those details, you will need to remove the termination by clicking on Undo, you can then re-do the termination.
Please don't hesitate to post again if you need help in the future.
If my response has answered your enquiry please click "Accept as Solution" to assist other users find this information.
Cheers,
Leneth