Maximum number of blocked applications

After doing some testing I stumbled upon some errors when setting a fairly large amount of applications to store.applications.blockedApplications.

I figured out that ManagedSettings are stored in a plist file which has a maximum size that the OS is willing to read (hint: it's less than 600KB)

So I'd ask two questions:

1. What's the maximum amount of applications we can set as blockedApplications and
2. What does the console log of Ignoring forbidden setting application.blockedApplications: valueNotAllowed mean? Which value is not allowed?