I've configured a step to copy my SharePoint "Shared Documents" library folder to a backup subfolder in a library on a different site. The step was successful when I tested it on a subfolder within the library I want to copy, which only contained one file. However, when I changed it to copy the entire "Shared Documents" library folder, it started failing with the error "Source or Destination likely invalid. Check that the file exists and has an SPListItem."
Changing the "If another folder is already there" option does not help. The library has about 4,000 files.
Can you tell me whether Flow has the capability to copy the entire document library to another site's library? If so, any ideas on why it might not be working in my case?