Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/STMicroelectronics/STM32U599/PWR/PWR_PDCRA#0x0
PWR port A pull-down control register
Port A pull-down bit 14 When set, this bit activates the pull-down on PA14 when the APC bit is set in PWR_APCR.
https://github.com/cmsis-svd/cmsis-svd-data