diff --git a/service_mesh/v2x/ossm-security.adoc b/service_mesh/v2x/ossm-security.adoc
index dd8215ff21..4d5d74484e 100644
--- a/service_mesh/v2x/ossm-security.adoc
+++ b/service_mesh/v2x/ossm-security.adoc
@@ -7,6 +7,17 @@ toc::[]
 
 If your service mesh application is constructed with a complex array of microservices, you can use {ProductName} to customize the security of the communication between those services. The infrastructure of {product-title} along with the traffic management features of {ProductShortName} can help you manage the complexity of your applications and provide service and identity security for microservices.
 
+.Before you begin
+
+If you have a project, add your project to the xref:../../service_mesh/v2x/installing-ossm.adoc#ossm-member-roll-modify_installing-ossm[`ServiceMeshMemberRoll` resource]. 
+
+[NOTE]
+====
+After you add the the namespace to the `ServiceMeshMemberRoll`, access to services or pods in that namespace will not be accessible to callers outside the mesh.
+====
+
+If you don't have a project, install the xref:../../service_mesh/v2x/prepare-to-deploy-applications-ossm.adoc#ossm-tutorial-bookinfo-overview_deploying-applications-ossm[Bookinfo sample application] and add it to the `ServiceMeshMemberRoll` resource. The sample application helps illustrate security concepts.
+
 include::modules/ossm-security-mtls.adoc[leveloffset=+1]
 
 include::modules/ossm-security-cipher.adoc[leveloffset=+1]