Rules for a valid pool.d/www.conf file for php-fpm

Question

This is how I sorted my /etc/php/7.0/fpm/pool.d/www.conf file after deleting all comments out of it for a nicer and easier display:

[www]
user = www-data
group = www-data
listen.owner = www-data
listen.group = www-data
listen.allowed_clients = 127.0.0.1:9000
listen = fastcgi_pass 127.0.0.1:9000
pm = dynamic
pm.max_children = 5
pm.start_servers = 2
pm.min_spare_servers = 1
pm.max_spare_servers = 3

Is this valid?

I ask this question after being stuck with this problem without any log error to help understand what went wrong (the above sorting and deleting of comments might be the case for the problem in the link?).