For the Auto Retry, you'll have to set up your work queue accordingly it won't retry automatically.
So in this example, BP would force retry items for 3 items.
As Shikhar stated correctly when you leave an item hanging in the locked state and does to mark it as complete/exception those items will be marked as Auto Clean Up.
Session End is again altogether a different thing. Session end means the process that you're running on a bot from the control room is completed which means your session is ended.
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Thanks & Regards,
Tejaskumar Darji
Sr. Consultant-Technical Lead
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