ArcGIS Enterprise 11.0\ Pro 3.0.2: Why “data store” registered by portal can’t be unregistered?

[JamalNUMAN]

ArcGIS Enterprise 11.0\ Pro 3.0.2: Why “data store” registered by portal can’t be unregistered?

I couldn’t figure out why “data store” registered by portal can’t be unregistered

[ReeseFacendini]

You need to log into the Enterprise Portal as the user that created that DataStore connection, go into the item details, Settings, and down at the bottom of the Settings page, uncheck the box for the connected server. Once the DataStore is no longer connected to ArcGIS Server, it can be removed via Enterprise Portal.

Only DataStores added through the ArcGIS Server Manager can be removed through the Server Manager. All other DataStores need to be removed through the Enterprise Portal

[JamalNUMAN]

Not sure how can I go to “item” detail in the the screenshot below