Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/STMicroelectronics/STM32L4x1/SYSCFG/CFGR2#0x0
CFGR2
OCKUP (Hardfault) output enable bit
SRAM2 parity lock bit
PVD lock enable bit
ECC Lock
SRAM2 parity error flag
https://github.com/cmsis-svd/cmsis-svd-data