Meanings of require scrutiny in English

All worthwhile organisations require scrutiny and even overhaul from time to time.

Best practices for fixation method and procedure type require scrutiny.

The billing procedures require scrutiny drilling down to the extrapolation of the raw data and the actual mathematical calculations used for billing.

The methods of writing in the Far East, being pictorial and inexact, require scrutiny of the context before a given sentence can be correctly interpreted.

However, there is a related issue of some significance that also requires scrutiny.