As part of the Persistence Expiration processes, within Designer we have the ability to set a retention threshold of the results tab. i.e. 30 days.
After enabling this - all completed results are purged but all the "error" results remain. And this depending on the original count can run into the thousands, such as in my environment. Id like to see the "Error" results become part of the clean up processing because of the following reasons:
1. We do not have dedicated admins that have time to manually or by group delete these error result items.
2. Most if not all - errors are resolved immediately. if there were to be kept as a reference, a screen shot of the results are normally taken and filed away.
Support says this is intentional for resolution tracking purposes - but to counter - as I stated in item 2 - most errors are immediately looked at and worked on. So there is no reason to keep errored results. Especially when they are time-stamped dates greater than the expiration values selected.