Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/STMicroelectronics/STM32U599/FMAC/SR#0x0
FMAC Status register
Y buffer empty flag
X1 buffer full flag
Overflow error flag
Underflow error flag
Saturation error flag
https://github.com/cmsis-svd/cmsis-svd-data