Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/Series1/EFR32MG14P/EFR32MG14P732F256IM48/RTCC/RET11_REG#0x0
Retention Register
General Purpose Retention Register
https://github.com/cmsis-svd/cmsis-svd-data