s11s

Yes, for a lot of my clients. I enquired it from GA team and they don't even have an answer. Usually I see Threshold applied for the account which handles a lot of data.

Would love to hear from others if this is true in their case

For these pages, you can configure custom reports and see if any data flowing in. You can configure and access it from Explore tab

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if for any dimensional data there is a way to identify a person (even theoretically) thats when aggregate the data

That’s true <@U030SDYNX7V> 
So apparently threshold is applied when there is a chance that the PII can be exposed. It prevents a company to identify an user individually. Usually it’s applied when the page visits are too low. 
In my cases, the users visiting to those pages were less than 5. That’s why I’m unable to see any data. I removed the “users” metric from the report and then data started to show up. Maybe you should try this too <@U02ULCHDGB0> 

there are many other scenarios that can happen even when page views are in higher volume

Is it? This is what I read actually. Would like to know more cases. Is there any page I can go through?

the concept is same, it can occur even when page views are more ( its not limited to when page views are less.

but how come PII will be revealed when the volume is more since GA doesn't show any such information?

i am going to try to quote a completely hypothetical example to example. lets say if you have the IP address and someone who visited a website from a place ( large palace - lives alone) so in theory you can identify who visited

what all Google flags under this - only google knows

this is all the repurcussion of privacy fights it has been having for the last few years

Thanks <@U03GG5FQ4UB> and <@U030SDYNX7V> for the insight. Another scenario I have seen is when a particular page gets a large amount of traffic through different sources like ads, referral and etc. 

However in the default channel settings, I have seen a lot of users come from unassigned sources. What's the concept around the same.

unassigned - there has been reports of bugs on that side of things

but if its not that the other commonly seen reasons is improper usage of utm_ params

But a few channels give, no follow link right? In that case, won't that fall under `unassigned` ? <@U030SDYNX7V>