Instead of removing “root” from /etc/ftpd/ftpusers and modifying the /etc/proftpd.conf file on both local and remote machines.
Edit /etc/proftpd.conf file and change “RootLogin off” to “RootLogin on” and then restart the ftp services by using the below command for the changes to take effect,
#svcadm restart svc:/network/ftp:default
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