Carrier Settings Update Failure
iTunes is telling me that there is a carrier settings update available for my phone. When I click to update I get an error: iTunes could not update the carrier settings on your iPhone. An unknown error occured (-100000). Going to SETTINGS>GENERAL>ABOUT on my phone shows my carrier settings but there is nothing there indicating an update is available. So iTunes is telling me there is an update but my phone doesn't seem to know there is one. Any ideas?
iPhone 7 Plus, iOS 10.3.2