Need guidance on "0" values for several fields

With the recent changes, we do get some 1 minute aggregate with Close/High/Low being 0. This is easily avoidable by ignoring those 0 values. However, there are now several fields that always report 0 and wondering what guidance is being given when working with these values received from the Alpaca web socket streaming data feed?

Accumulated Volume
Official Open Price
VWAP
AveragePrice