This script gets skipped if the server has no explict limit for the
number of subscriptions.

That happens here:
Subscription Services/Subscription Basic/Test Cases/052.js:
if (gServerCapabilities.MaxSupportedSubscriptions < 2) {
addSkipped("Server does not support two subscriptions as needed for this test case. This is only allowed for Nano and Micro Device Server profiles.");
return (false);
}

The value gServerCapabilities.MaxSupportedSubscriptions is zero,
which is treated as "unlimited" in other scripts.

The same happens for:
Monitored Item Services/Monitor Basic/Test Cases/Err-023.js
Monitored Item Services/Monitor Basic/Test Cases/Err-031.js
Monitored Item Services/Monitor Basic/Test Cases/Err-038.js