Error: CMN.ATO.IITR.210003
Solution:
Check private health insurance details from policy statement, if amounts are correctly entered.
Please note that highlights with the yellow color CMN.ATO.IITR.21003 are just notifications which you may review or not, depends on you.
Light yellow codes are just a notification/warning and you can proceed and make your form VALID.
Kindly press "Validate" and see if the status is "Form is Valid".