Hi@kscz
This is beyond our support scope. you should seek for help from KEIL support.
Based on current information, KEIL's DFP package hasn't been updated and doesn't support all S32K3 models.
You will need to implement your own S32K388 programming algorithm.
(I have created a KEIL question thread to inquire about future update plans for the S32K3 DFP.)