An issue has been reported in Reckon APS Tax 2020.3.1 where the following error is triggered in some individual tax returns upon lodgement:
CMN.ATO.IITR.EM0028 Australian Government Pensions and Allwances exceeds $18390.
The problem described in this article has been confirmed as an user error and restriction of ATO specifications, with reference TAX-384.
Add the SAPTO code . If you believe that the taxpayers are not eligible, lodge the return on paper.