Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32wl/STM32WLE5_CM4/FLASH/PCROP1ASR#0x0
Flash PCROP zone A Start address register
PCROP1A area start offset
https://github.com/modm-io/cmsis-svd-stm32