What is the relationship between PIDR.Err and PIDR.Tar-PID.Act

As I know,
PIDR.Err = Roll rate error
PIDR.Tar = Roll target rate
PIDR.Act = Roll rate achieved
PIDR.P = Proportional of PIDR.Err

so, I thoght PID.Tar - PIDR.Act is PIDR.Err,
PIDR.Err / PIDR.P is RLL_RATE_P as i set but it wasn’t

why it isn’t different?

It’s my flight log