Specify running 4G/5G cores together is not supported in AiaB

Change-Id: Iec1372d20e7ae6fdad476eda966b3d881cd46139
diff --git a/developer/aiab.rst b/developer/aiab.rst
index 5a2c15b..43f160f 100644
--- a/developer/aiab.rst
+++ b/developer/aiab.rst
@@ -14,6 +14,8 @@
 ROC and SD-CORE.  If the ROC is not deployed, a simple tool called SimApp
 is used to configure the required state in SD-CORE for testing core functionality.
 
+**NOTE: Running both 4G and 5G SD-CORE simultaneously in AiaB is currently not supported.**
+
 Helm charts are the primary method of installing the SD-CORE and ROC resources.
 AiaB offers a great deal of flexibility regarding which Helm chart versions to install:
 
@@ -359,6 +361,8 @@
 Troubleshooting / Known Issues
 ------------------------------
 
+**NOTE: Running both 4G and 5G SD-CORE simultaneously in AiaB is currently not supported.**
+
 If you suspect a problem, first verify that all pods are in Running state::
 
     kubectl -n omec get pods
diff --git a/developer/aiabhw.rst b/developer/aiabhw.rst
index f9ab898..f757531 100644
--- a/developer/aiabhw.rst
+++ b/developer/aiabhw.rst
@@ -31,6 +31,8 @@
   using *systemd-networkd*, which is the default for Ubuntu, and copies some files into `/etc/systemd/network`;
   the reason for this is to enable persistence of AiaB's networking configuration across server reboots.
 
+**NOTE: Running both 4G and 5G SD-CORE simultaneously in AiaB is currently not supported.**
+
 Preparation
 -----------
 
@@ -495,6 +497,8 @@
 Troubleshooting
 ---------------
 
+**NOTE: Running both 4G and 5G SD-CORE simultaneously in AiaB is currently not supported.**
+
 "make" fails immediately
 ^^^^^^^^^^^^^^^^^^^^^^^^