Hi,
you can use PE Micro partition feature and add your data into FlexRAM section (already partitioned by PE Micro as emulated eeprom) by __attribute__ specifier. You can find partition option in debug configurations -> Advanced Options


You can find more details about EEESIZE and DEPART in reference manual.
Modify your linker file and add flexram section - like this:

And add your variable in .eeeprom section - for example in your main.c:

Here is an example related to this topic - Example: S32K144 EEEPROM usage
Hope it helps.
Jiri