diff --git a/Installation/APSDeveloperInstallation.md b/Installation/APSDeveloperInstallation.md
index 2e6d68cdf6abce89aba1589e867e9f5d738b9dba..e6cf0432d1d47bfaad5b7774861b626a8cdeabd5 100644
--- a/Installation/APSDeveloperInstallation.md
+++ b/Installation/APSDeveloperInstallation.md
@@ -42,6 +42,8 @@ An example of setting up the Data Management system for a developer is described
 
  - Change directory to the root of the Data Management components
 
+ - Note some configuration can be changed before processing the as discussed below.  There are two files **dm_dev.deploy.conf** and **dm.deploy.conf** which define some environment variables used in the scripts used to install & configure.  For the test deployment, **dm_dev.deploy.conf** is used.
+
 > cd ../dev
 
  - Execute the dm/_deploy/_test/_system.sh file in the sbin directory