Run and put your domain:
read -p "Domain: " domain; username=`/scripts/whoowns $domain`; email=`grep @ /var/cpanel/users/$username |tail -n1 |cut -d '=' -f2|sed -e 's/@/\%40/'`; whmapi1 generatessl domains=$domain countryName=US stateOrProvinceName=Texas localityName=Houston organizationName="The Justice League of GG" emailAddress=$email pass=`openssl rand -base64 15` keysize=2048 skip_certificate=0
Now use WHM to install it
Enjoy!
Source: https://documentation.cpanel.net/display/DD/cPanel+API+2+Functions+-+SSL%3A%3Agencsr