Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32l4+/STM32L4R5/FLASH/PCROP1SR#0x0
Flash Bank 1 PCROP Start address register
Bank 1 PCROP area start offset
https://github.com/modm-io/cmsis-svd-stm32