Error message if unmapped location passed through #45
Error message if unmapped location passed through #45

https://github.com/UoEMainLibrary/LibraryMapping/issues/45

UoEMainLibrary/LibraryMapping,UoEMainLibrary/LibraryMapping,charlotteyizhang/LibraryMapping,UoEMainLibrary/LibraryMapping,charlotteyizhang/LibraryMapping,charlotteyizhang/LibraryMapping