A Queue Item is moved to an "Abandoned" status in UiPath Orchestrator when the item was "In Progress" but the transaction status was never set to "Successful" or "Failed". This can happen when the item remained in the "In Progress" status for a long period of time (approx. 24 hours) without being processed, or when the Robot that was processing the item encountered an error or was stopped1. The "Abandoned" status indicates that the item was not completed and needs to be retried or deleted. The item can be retried manually from the Transactions page in Orchestrator, or programmatically using the API2. The item can also be deleted manually from the Transactions page, or automatically using the Auto Delete option in the Queue settings3. References: Queue Item Statuses, Changing the abandon status of Queue Transaction, and About Queues and Transactions from UiPath documentation and forum.