return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid unit type.");
if (!unit_vtable[t]->can_transient)
- return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unit type %s does not support transient units.");
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unit type %s does not support transient units.", unit_type_to_string(t));
mode = job_mode_from_string(smode);
if (mode < 0)