This issue is currently affecting APS Tax Activity Statements after the upgrade of APS Tax 2026.0.0.
This has been fixed in Tax Australia: April v2026.1.0 release.
Please update to the latest release, if this is not possible, we have a fix available that will enable the creation of Activity Statements only; however, the prefill will not yet import all fields sent from the ATO.
Follow these steps below for the workaround:
📌Note: APS needs to be closed before copying the Fix Files to their specified location.
Download the Aps.Framework.Runtime.SbrSPI.zip file.
Extract the content inside the zip file (Aps.Framework.Runtime.SbrSPI.dll) to the C:\Program Files (x86)\Advance Tax\Framework directory.
You can now create new Activity Statements.