diff --git a/chapters/security.adoc b/chapters/security.adoc
index e029f9c1..cc8e4257 100644
--- a/chapters/security.adoc
+++ b/chapters/security.adoc
@@ -152,6 +152,11 @@ permission names in APIs must conform to the following naming pattern:
 
 This pattern is compatible with the previous definition.
 
+**Note:** This naming convention only applies to scopes for service-to-service
+communication using the Platform IAM tokens. For IAM systems with other naming
+rules (e.g. Zalando Partner IAM), the naming should be consistent with the
+existing conventions of those systems.
+
 ////
 //Prepared change for functional permission names:
 Permission names in APIs must, respectively should conform to the functional