What does the green, yellow and red traffic light mean in relation to the valuation of the documents?

What does the green, yellow and red traffic light mean in relation to the valuation of the documents?

In the Exactian platform we have traffic lights that are related to the criticality of the documents: High (RED), Medium (YELLOW) and Low (GREEN).
For a resource to be suitable, it must comply with all the HIGH criticality documents (red).