An issue has been report in Reckon APS Tax 2020.1.0 where the following error is triggered when no amendment details in the form. This affects tax returns rolled from 2020 where the 2019 returns with amendment.
CMN.ATO.GEN.010029 - If an Amendment Sequence Number, Amendment Type or Amendment Reason is present, then the Amendment Indicator must be 'yes' (true)
The problem described in this article has been fixed in Reckon APS Tax 2020.2.0.
Please contact support for workaround details per internal KA-04025.