Automatic Approvals/Rejections do not trigger when the expiry date is met.
Error message displayed is:
existing transaction found for transaction marked with propagation 'never'
Aria Automation 8.18
This is caused by a toggle check in the transaction within the code.
This is resolved in Aria Automation 8.18.1 patch 3:
https://techdocs.broadcom.com/us/en/vmware-cis/aria/aria-automation/8-18/vmware-aria-automation-release-notes.html