Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/STMicroelectronics/STM32G070/SYSCFG/ITLINE29#0x0
interrupt line 29 status register
USART3
USART4
USART5
USART6
https://github.com/cmsis-svd/cmsis-svd-data