diff --git a/README.md b/README.md
index 3632505a..bfe3ae83 100644
--- a/README.md
+++ b/README.md
@@ -130,6 +130,8 @@ If `CASC_JENKINS_CONFIG` points to a folder, the plugin will recursively travers
 :x: `/jenkins/.configs/casc_configs/..dir2/config.yaml`  
 </details>
 
+All configuration files that are discovered MUST be supplementary. They cannot overwrite each other's configuration values. This creates a conflict and raises a `ConfiguratorException`. Thus, the order of traversal does not matter to the final outcome.
+
 Instead of setting the `CASC_JENKINS_CONFIG` environment variable, you can also define using
 the `casc.jenkins.config` Java property.  This is useful when installing Jenkins via a package
 management tool and can't set an environment variable outside of a package-managed file, which could