diff --git a/org/open_power/Common/Callout.errors.yaml b/org/open_power/Common/Callout.errors.yaml
new file mode 100644
index 0000000..dab7a3b
--- /dev/null
+++ b/org/open_power/Common/Callout.errors.yaml
@@ -0,0 +1,2 @@
+- name: Procedure
+  description: Procedure callout