This is a straight count of encryption failures in the FWZ algorithm outside the encapsulation-specific path, as stated in its description 'Fwz encryption errors.' It's a narrower signal than cpvFwzEncapsEncErrs, so an admin comparing the two can tell whether errors are isolated to the encapsulation wrapper or occur in the core FWZ cipher itself. A gateway that reports 12 of these errors during a bulk file transfer over an FWZ tunnel would suggest the cipher engine is choking on load rather than a protocol negotiation issue.