Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/STMicroelectronics/STM32L562/DMAMUX1/RG3CR#0x0
DMA Request Generator 3 Control Register
Signal ID
Overrun Interrupt Enable
Generation Enable
Generation Polarity
Number of Request
https://github.com/cmsis-svd/cmsis-svd-data