Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32l4+/STM32L4R5/FLASH/PCROP2ER#0x0
Flash PCROP2 End address register
Bank 2 PCROP area end offset
https://github.com/modm-io/cmsis-svd-stm32