diff --git a/EPR-ATC-Simulator/installation.md b/EPR-ATC-Simulator/installation.md
index cd93d9f171196463e5d50fc1959e43b6ddc30fba..b1694c60237279b32c7d322158ab79afbedf6366 100755
--- a/EPR-ATC-Simulator/installation.md
+++ b/EPR-ATC-Simulator/installation.md
@@ -4,7 +4,7 @@ subtitle: ATC Simulator
 author: Wylem BARS
 function: Software Engineer
 date: 06/11/2019
-toolversion: 1.3.x
+toolversion: 2.0.x
 version: 1.01
 status: Reviewed
 reference: KER1-MAN-IHE-ATC_SIMULATOR_INSTALLATION-1_01
diff --git a/EPR-ATC-Simulator/release-note.md b/EPR-ATC-Simulator/release-note.md
index 81b1eeb425c099eedde4100d396f06dc34a509fd..fbbef13f16b6a2ede8213b7f533ff00e7f49ad0f 100755
--- a/EPR-ATC-Simulator/release-note.md
+++ b/EPR-ATC-Simulator/release-note.md
@@ -1,13 +1,18 @@
 ---
 title: Release note
 subtitle: ATC Simulator
-toolversion: 1.3.4
-releasedate: 2020-10-18
+toolversion: 2.0.0
+releasedate: 2023-06-08
 author: Youn Cadoret
 function: Software Engineer
 customer: IHE Europe
 reference: KER1-RNO-IHE-ATC_SIMULATOR
 ---
+# 2.0.0
+_Release date: 2023-06-08_
+__Task__
+* \[[ATCREPO-22](https://gazelle.ihe.net/jira/browse/ATCREPO-22)\] Migrate from STU3 to R4
+
 
 # 1.3.4
 _Release date: 2020-10-08_
diff --git a/EPR-ATC-Simulator/user.md b/EPR-ATC-Simulator/user.md
index ebfd584003fd2f11ad815e79009df4e28b536667..201a0adc9d2f82340b455beef85cf1b853eb37ed 100755
--- a/EPR-ATC-Simulator/user.md
+++ b/EPR-ATC-Simulator/user.md
@@ -4,7 +4,7 @@ subtitle: ATC Simulator
 author: Wylem BARS
 function: Software Engineer
 date: 06/11/2019
-toolversion: 1.3.x
+toolversion: 2.0.X
 version: 1.01
 status: Reviewed
 reference: KER1-MAN-IHE-ATC_SIMULATOR_USER
@@ -30,7 +30,7 @@ As a Patient Audit Record Repository, your system can request Audit Events from
 When acting as a Patient Audit Consumer, this simulator is able to send multiple requests to your SUT to test the handling of parameters :
 
 * date
-* entity-id
+* entity.identifier
 * entity-role
 * subtype
 * entity-type