Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/STMicroelectronics/STM32L562/FLASH/SECWM2R1#0x0
Flash secure watermak2 register
SECWM2_PSTRT
SECWM2_PEND
https://github.com/cmsis-svd/cmsis-svd-data