@SSavickas
Have a Look on this and Kindl Note the Option to Filter with the ID Reference information
Have a Look on another activity
The Basic Idea is:
Retrieve with get Queue items (applying some Filter Option If possible) some items
Evaluate the items and identify the Item of choice
Retrieve this Item with get Queue item and using ID Reference Info
Unfortunately you Dont have ID Reference available (you told) maybe you can implement or have a Look on orchestrator Rest API If you can use additional for identifications