The key two endpoint URLs share when they name the same System: scheme, host
(lowercase, without a default port), path without a trailing slash, and query.
The scheme is part of the key because http:// and https:// on the same host are
not interchangeable: of the councils the registry lists under both, some answer only
over one of them (Harsum's http vhost redirects to a host that does not exist, while
its https one answers HTTP 500). Ignoring it pasted the check taken on one scheme
onto the entry showing the other.
The key two endpoint URLs share when they name the same System: scheme, host (lowercase, without a default port), path without a trailing slash, and query.
The scheme is part of the key because
http://andhttps://on the same host are not interchangeable: of the councils the registry lists under both, some answer only over one of them (Harsum's http vhost redirects to a host that does not exist, while its https one answers HTTP 500). Ignoring it pasted the check taken on one scheme onto the entry showing the other.