CMN.ATO.IITR.730355 - Foreign pension or annuity income details are incomplete validation error
You'll receive this validation error if the Foreign pension or annuity income at item 20 is incomplete.
To resolve, open the item 20 worksheet and check the foreign pensions or annuities fields.
If the taxpayer didn't have any foreign pensions or annuities, then remove any zeroes from the fields.
If the taxpayer did receive a foreign pension or annuity, then refer to Claiming foreign pensions or annuities.