I am unable to delete the hidden columns (IconOverlay) from the document library using CSOM. At the time of provisioning, the IconOverlay column was added to content type and content type is associated with the document library.
Now I have to remove that column from the document library, so first, iI am removing the column from the content type and I am successful in doing that but when it comes to removing the orphan IconOverlay column from the document library, it is throwing an exception "You can not delete hidden column". Any help will be appreciated.