Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/Series1/EFM32GG11B/EFM32GG11B110F2048GM64/CAN1/MESSAGEDATA#0x0
New Data Register
DATAVALID Bits (of All Message Objects)
https://github.com/cmsis-svd/cmsis-svd-data