When looking at the History tab of an ILL request, you can see the history of all the actions taken (e.g. shipped, received, returned, etc). And, you can see who initiated the action under Operator. However, you cannot see where the action was taken. For example, at our institution, we have 5 branch library locations where some staff work at multiple branches. When an item is returned for example, we can see the Operator's ID, but not where the action took place. I noticed this in an effort to hunt down a lost item - but the staff who returned the book works at several branch libraries, so I cannot know at which library the book was returned.