Unable to activate or suspend a domain in Plesk:

[mahesh]

Question
Unable to activate or suspend a domain in Plesk: Some fields are empty or contain an improper value. ('email' = '')
Applicable to: Plesk for Linux Plesk for Windows
It is not possible to activate/suspend a domain or a Plesk user account due to one of the following error messages:

Error: cObject::update() failed: Some fields are empty or contain an improper value. ('email' = '')

Error: cObject::update() failed: Some fields are empty or contain an improper value. ('displayName' = '', 'name' = '', 'email' = '')

Cause
DNS zone is not configured for the domain or email address is missing from DNS zone configuration.

Resolution

• Connect to the Plesk server via SSH (Linux) or RDP (Windows)
• Create Plesk database backup
• Log in to Plesk
• Restore default DNS settings for the domain at Domains > example.com > DNS Settings > Reset to Default