Is there a field or formula that could be put on a saved search that would show the last date the inventory of an item was manually adjusted?

do a inventory adjustment search. Group by max date or max transaction number.

Thanks. I found this after I posted the question: http://www.netsuiterp.com/2019/03/create-saved-search-for-inventory.html And was able to customize it for our purposes.

sure that will show all of them. If you group MAX you can filter it down to just the most recent.