diff --git a/yaml/xyz/openbmc_project/State/Chassis.interface.yaml b/yaml/xyz/openbmc_project/State/Chassis.interface.yaml
index 7c74a04..13606a2 100644
--- a/yaml/xyz/openbmc_project/State/Chassis.interface.yaml
+++ b/yaml/xyz/openbmc_project/State/Chassis.interface.yaml
@@ -7,6 +7,8 @@
       description: >
           The desired power transition to start on this chassis. This will be
           preserved across AC power cycles of the BMC.
+      errors:
+          - xyz.openbmc_project.State.Chassis.Error.BMCNotReady
 
     - name: CurrentPowerState
       type: enum[self.PowerState]