How to delete released objects?
Unreleased is not the way to go here. Once you change release an item there really is no ‘good’ way to delete it.
Here’s the catch. Although unreleasing the item can in fact allow you to delete you raise risk to other processes. In the database itself, the release process will populate the data in different tables. Additionally, in a mature environment we quite usually have event processes that trigger PX’ and unreleasing can in essence break these processes and you would have bad data and subsequent issues downstream.
The only option you have now it to raise another change order and OBSOLETE this item.