diff --git a/adoc/SLES4SAP-hana-angi-perfopt-15.adoc b/adoc/SLES4SAP-hana-angi-perfopt-15.adoc
index db0633ff..88072684 100644
--- a/adoc/SLES4SAP-hana-angi-perfopt-15.adoc
+++ b/adoc/SLES4SAP-hana-angi-perfopt-15.adoc
@@ -678,6 +678,10 @@ Do this on all nodes.
 
 ====
 
+NOTE: Do not replace the package SAPHanaSR by SAPHanaSR-angi in an already running cluster.
+Upgrading from SAPHanaSR to {saphanasr} requires a certain procedure. See manual page
+SAPHanaSR_upgrade_to_angi(7) for details.
+
 Installing the packages supportutils-plugin-ha-sap and ClusterTools2 is highly
 recommended. The first helps collecting data for support requests, the second
 simplifies common administrative tasks.
diff --git a/adoc/SLES4SAP-hana-sr-guide-PerfOpt-15.adoc b/adoc/SLES4SAP-hana-sr-guide-PerfOpt-15.adoc
index 57450dc8..f9acf2a1 100644
--- a/adoc/SLES4SAP-hana-sr-guide-PerfOpt-15.adoc
+++ b/adoc/SLES4SAP-hana-sr-guide-PerfOpt-15.adoc
@@ -53,6 +53,15 @@ collaboration with {SAP}, cloud service and hardware partners, {SUSE} provides t
 resource agents for customers to ensure the high availability of {HANA} system
 replications.
 
+The here described HA setup using the SAPHanaSR package has been used in the past.
+It still is supported for existing clusters.
+For deploying new HA clusters, we recommend to use the SAPHanaSR-angi package
+following 
+"{SAPHANA} System Replication Scale-Up - Performance Optimized Scenario".
+// TODO PRIO1: add URL once published
+// (https://documentation.suse.com/sbp/sap/html/SLES4SAP-hana-angi-perfopt-15).
+
+
 ==== Abstract
 
 This guide describes planning, setup, and basic testing of {sles4sap} based on
@@ -3512,10 +3521,12 @@ include::common_gfdl1.2_i.adoc[]
 //   - corosync example with two rings
 // REVISION 1.6 2022/08
 //   - susChkSrv.py
-//   - updated examples, reference
+//   - updated examples, references
 // REVISION 1.6a 2023/04
 //   - SAP native systemd support is default for HANA 2.0 SPS07
 // REVISION 1.6b 2024/02
 //      - HANA 2.0 SPS05 rev.059 Python 3 needed
+// REVISION 1.6c 2024/03
+//	- updated references
+//	- pointer to SAPHanaSR-angi
 //
-