@Alva i have tried the same with the 3.6.0.beta2 +3 it worked as intended

@droftarts Sure will do. Thank you.

@o_lampe So my requirement is to use the unused axes during printing. so the movement of the unused axes is set in the daemon.g. It is trigerred by a flag. My understanding about multiple motion system is the unused axes should be accessible by the other motion system. The error i am getting is that somehow the unused axis is also used by the print job motion system.

@T3P3Tony Tested the above mentioned testing procedure and got the same error as 3.6.0.beta2 + 5.

@droftarts Sure will do. Thank you.

@Alva i have tried the same with the 3.6.0.beta2 +3 it worked as intended

@Alva U axis was trying to use only in the second motion system. so motion system 0 and motion system 1 are not able to execute simultaneously.

@Alva Tested the second motion system with the new version 3.6.0.beta2 + 5, but i am getting the error shows in the picture below:

tried gcode :

set global.daemonStop = true ; stopped the daemon
M118 S{"starting to move"}
G90
set global.daemonStop = false ; activated the daemon which only use U axis
G1 X0 Y0
M400 S1
G91
G1 X100 Y100 F200
M400 S1
G90
M118 S{"move done"}
M99

daemon.g :

; File Name: 		/sys/daemon.g
if(!exists(global.daemonStop))
	global daemonStop = false	; Set to 1 to stop the daemon.g, it can be use to upload a new daemon.g file

while( global.daemonStop == false )
    if(state.status== "processing")
        G91
        M596 P1
        G1 U5 F300      
        M596
    G4 P0
M99; Exit; File Name: 		/sys/daemon.g

@droftarts thank you. got it.

@dc42 g binary "0:/firmware/Duet3_SDiap32_MB6HC.bin" not found , in the drop box this file is not available

@amimafe Yes, what i meant was M911 S22 P"M114 M913 X0 Y0 Z0" , here in the power failure script : inside the quotes whatever is written, it is not executing. The power failure recovering is happening perfectly. I also wanted to print the previous line one more time to avoid gaps.
Also, some times what i observed was the recovery position is about 2mm shifted than the original position.