diff --git a/xyz/openbmc_project/Certs/Replace.interface.yaml b/xyz/openbmc_project/Certs/Replace.interface.yaml
index 8f13b11..714c589 100644
--- a/xyz/openbmc_project/Certs/Replace.interface.yaml
+++ b/xyz/openbmc_project/Certs/Replace.interface.yaml
@@ -14,3 +14,4 @@
       errors:
         - xyz.openbmc_project.Common.Error.InternalFailure
         - xyz.openbmc_project.Certs.Error.InvalidCertificate
+        - xyz.openbmc_project.Common.Error.NotAllowed