<div dir="ltr">Hi All:<br>    I am developing PSU monitor module on my platform and investigating phosphor-power first. I have some question about phosphor-power<div>1. in power-supply-monitor@.service file</div><div>...</div><div>Description=Power Supply %I Monitor<br>Wants=mapper-wait@-xyz-openbmc_project-inventory-system-chassis-motherboard-powersupply%i.service<br>After=mapper-wait@-xyz-openbmc_project-inventory-system-chassis-motherboard-powersupply%i.service<br></div><div>...</div><div>I know Wants and After in systemd service file but I don't understand what is 

mapper-wait@-xyz-openbmc_project-inventory-system-chassis-motherboard-powersupply%i.service mean? It seems not a service.</div><div>I also execute psu-monitor binary as below</div><div>...</div><div>root@test:~# psu-monitor --path=/sys/bus/i2c/devices/13-0068 --instance=0 --inventory=/system/chassis/motherboard/powersupply0<br>terminate called after throwing an instance of 'sdbusplus::exception::SdBusError'<br>  what():  sd_bus_call: org.freedesktop.DBus.Error.UnknownObject: Unknown object '/xyz/openbmc_project/inventory/system/chassis/motherboard/powersupply0'.<br>Aborted<br></div><div>...</div><div>PSU inventory is not exist. Which service need to create PSU inventory and how to create it?</div><div>Thanks.</div><div><br></div><div>Tyler</div></div>