Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32l4+/STM32L4P5/SCB_ACTRL/ACTRL#0x0
Auxiliary control register
DISMCYCINT
DISDEFWBUF
DISFOLD
DISFPCA
DISOOFP
https://github.com/modm-io/cmsis-svd-stm32