I have two lists listA, listB. listA has columns of FileName , Location, Index ID. listB has Index ID, location, FileName and has data. I need to design a nintex workflow such that when an item is added to listA through some custom code already present (which I don't have access to), the Index ID, FileName of the current item that is added should be compared with the listB Index ID, FileName and the Location of List B should be populated in the Location column of listA for the matched Index ID, FileName values.
single update multiple items action should do the job.
the workflow runs on listA, and should be configured to run on item creation.