Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32u5/STM32U535/SYSCFG/CCVR#0x0
compensation cell value register
NCV1
PCV1
NCV2
PCV2
NCV3
PCV3
https://github.com/modm-io/cmsis-svd-stm32