I get the "nlapiRC" & "doshippingrecalc" fields values when Scriptable cart is ON and on "Sublist Changed(recalc) event i.e add/update/remove quantity event. But also don't see any reference in any Netsuite document or on Suite Answers regeranding these two fields. my question is- Can I use these fields in client script for some processing? can these fields will be available in future as well? Do we have any reference of these fields anywhere?

if something is not documented, there is no warranty that it won't change in the near or long term. And when it does break, it could not get fixed ever.

Thanks...