FB_AD21, FB_AD22, FB_AD23, are missing in the pin out description for the MKV31F512VL
Where did they go? FB_AD31:FB_AD24 and FB_AD20:FB_AD00 are all identified in the specification.
These three(3) bits are also missing from the config tool, yet the write-up for the FlexBus clearly calls for all 32 bits to be available.