diff --git a/Readme.md b/Readme.md
index f7bd77e8b9224f78eceedff394229dba5fb12354..dc9afd1d68fe4664c3cb6f58f76327a27a3f75c2 100644
--- a/Readme.md
+++ b/Readme.md
@@ -1,6 +1,6 @@
 # NFV SOL011 - OpenAPIs for the Or-Or Reference Point
 
-This repository contains OpenAPIs for ETSI GS NFV-SOL 011 v4.4.1, RESTful protocols 
+This repository contains OpenAPIs for ETSI GS NFV-SOL 011 v4.5.1, RESTful protocols 
 specification for the Or-Or Reference Point.
 
 More information at [NFV Solutions wiki](https://nfvwiki.etsi.org/index.php?title=NFV_Solutions).
diff --git a/src/SOL011/APIVersion/APIVersion.yaml b/src/SOL011/APIVersion/APIVersion.yaml
index cf22d477f89362509f41924ce1e43b061f0d3c59..61df5c5bbef7b44f312f91f848fa06090665cd94 100644
--- a/src/SOL011/APIVersion/APIVersion.yaml
+++ b/src/SOL011/APIVersion/APIVersion.yaml
@@ -23,8 +23,8 @@ info:
     name: NFV-SOL WG
 
 externalDocs:
-  description: ETSI GS NFV-SOL 011 V4.4.1
-  url: https://www.etsi.org/deliver/etsi_gs/NFV-SOL/001_099/011/04.04.01_60/gs_NFV-SOL011v040401p.pdf
+  description: ETSI GS NFV-SOL 011 V4.5.1
+  url: https://www.etsi.org/deliver/etsi_gs/NFV-SOL/001_099/011/04.05.01_60/gs_NFV-SOL011v040501p.pdf
 
 paths:
   /nsd/api_versions:
diff --git a/src/SOL011/NSDManagement/NSDManagement.yaml b/src/SOL011/NSDManagement/NSDManagement.yaml
index 8d6b59058c1fb3446dc1059d0c3c3689d639bc98..243539fad92d26c30b0dcd9f2e11fc90cc0840db 100644
--- a/src/SOL011/NSDManagement/NSDManagement.yaml
+++ b/src/SOL011/NSDManagement/NSDManagement.yaml
@@ -17,8 +17,8 @@ info:
     name: "NFV-SOL WG"
 
 externalDocs:
-  description: ETSI GS NFV-SOL 011 V4.4.1
-  url: https://www.etsi.org/deliver/etsi_gs/NFV-SOL/001_099/011/04.04.01_60/gs_NFV-SOL011v040401p.pdf
+  description: ETSI GS NFV-SOL 011 V4.5.1
+  url: https://www.etsi.org/deliver/etsi_gs/NFV-SOL/001_099/011/04.05.01_60/gs_NFV-SOL011v040501p.pdf
 
 basePath: /nsd/v1
 
diff --git a/src/SOL011/NSFaultManagement/NSFaultManagement.yaml b/src/SOL011/NSFaultManagement/NSFaultManagement.yaml
index 5f07320c913ae38ea1e3bae62c6e15b55a61b550..7c2fa77f02258494c4fb7815d562a96e6d452862 100644
--- a/src/SOL011/NSFaultManagement/NSFaultManagement.yaml
+++ b/src/SOL011/NSFaultManagement/NSFaultManagement.yaml
@@ -17,8 +17,8 @@ info:
     name: "NFV-SOL WG"
 
 externalDocs:
-  description: ETSI GS NFV-SOL 011 V4.4.1
-  url: https://www.etsi.org/deliver/etsi_gs/NFV-SOL/001_099/011/04.04.01_60/gs_NFV-SOL011v040401p.pdf
+  description: ETSI GS NFV-SOL 011 V4.5.1
+  url: https://www.etsi.org/deliver/etsi_gs/NFV-SOL/001_099/011/04.05.01_60/gs_NFV-SOL011v040501p.pdf
 
 basePath: /nsfm/v1
 
diff --git a/src/SOL011/NSFaultManagementNotification/NSFaultManagementNotification.yaml b/src/SOL011/NSFaultManagementNotification/NSFaultManagementNotification.yaml
index 95a811881c15252f8c5ac19e1c16c35ad32ac0f8..21e03f78cde331b06558ec91b520188fe5cd3da2 100644
--- a/src/SOL011/NSFaultManagementNotification/NSFaultManagementNotification.yaml
+++ b/src/SOL011/NSFaultManagementNotification/NSFaultManagementNotification.yaml
@@ -17,8 +17,8 @@ info:
     name: "NFV-SOL WG"
 
 externalDocs:
-  description: ETSI GS NFV-SOL 011 V4.4.1
-  url: https://www.etsi.org/deliver/etsi_gs/NFV-SOL/001_099/011/04.04.01_60/gs_NFV-SOL011v040401p.pdf
+  description: ETSI GS NFV-SOL 011 V4.5.1
+  url: https://www.etsi.org/deliver/etsi_gs/NFV-SOL/001_099/011/04.05.01_60/gs_NFV-SOL011v040501p.pdf
 
 basePath: /callback/v1
 
diff --git a/src/SOL011/NSInstanceUsageNotification/NSInstanceUsageNotification.yaml b/src/SOL011/NSInstanceUsageNotification/NSInstanceUsageNotification.yaml
index d123b884b98f550aeefe61e63c30ecee3a8a74ba..19df15700f4bdd00b960e285228c441e77e25de1 100644
--- a/src/SOL011/NSInstanceUsageNotification/NSInstanceUsageNotification.yaml
+++ b/src/SOL011/NSInstanceUsageNotification/NSInstanceUsageNotification.yaml
@@ -14,8 +14,8 @@ info:
     url: https://forge.etsi.org/etsi-forge-copyright-notice.txt
 
 externalDocs:
-  description: ETSI GS NFV-SOL 011 V4.4.1
-  url: https://www.etsi.org/deliver/etsi_gs/NFV-SOL/001_099/011/04.04.01_60/gs_NFV-SOL011v040401p.pdf
+  description: ETSI GS NFV-SOL 011 V4.5.1
+  url: https://www.etsi.org/deliver/etsi_gs/NFV-SOL/001_099/011/04.05.01_60/gs_NFV-SOL011v040501p.pdf
 
 security:
   - OauthSecurity:
@@ -78,7 +78,7 @@ paths:
         - $ref: "#/components/parameters/filter.Subscriptions"
         - $ref: "#/components/parameters/nextpage_opaque_marker.Subscriptions"
       responses:
-        201:
+        200:
           $ref: "#/components/responses/Subscriptions.Get.200"
         400:
           $ref: ../components/SOL011_resp.yaml#/components/responses/400
diff --git a/src/SOL011/NSLifecycleManagement/NSLifecycleManagement.yaml b/src/SOL011/NSLifecycleManagement/NSLifecycleManagement.yaml
index aa96b650e0f31c438ce4163bc2320fb6ae0fdf46..a82b00cb50f566b3351780a33d5925683f7e84ff 100644
--- a/src/SOL011/NSLifecycleManagement/NSLifecycleManagement.yaml
+++ b/src/SOL011/NSLifecycleManagement/NSLifecycleManagement.yaml
@@ -17,8 +17,8 @@ info:
     name: "NFV-SOL WG"
 
 externalDocs:
-  description: ETSI GS NFV-SOL 011 V4.4.1
-  url: https://www.etsi.org/deliver/etsi_gs/NFV-SOL/001_099/011/04.04.01_60/gs_NFV-SOL011v040401p.pdf
+  description: ETSI GS NFV-SOL 011 V4.5.1
+  url: https://www.etsi.org/deliver/etsi_gs/NFV-SOL/001_099/011/04.05.01_60/gs_NFV-SOL011v040501p.pdf
 
 basePath: /nslcm/v1
 
diff --git a/src/SOL011/NSLifecycleManagementNotification/NSLifecycleManagementNotification.yaml b/src/SOL011/NSLifecycleManagementNotification/NSLifecycleManagementNotification.yaml
index 174349283621e82005975105563b16b21b2e2f26..95f7ada78b8581090c8828c6bcb27816bc9e465c 100644
--- a/src/SOL011/NSLifecycleManagementNotification/NSLifecycleManagementNotification.yaml
+++ b/src/SOL011/NSLifecycleManagementNotification/NSLifecycleManagementNotification.yaml
@@ -17,8 +17,8 @@ info:
     name: "NFV-SOL WG"
 
 externalDocs:
-  description: ETSI GS NFV-SOL 011 V4.4.1
-  url: https://www.etsi.org/deliver/etsi_gs/NFV-SOL/001_099/011/04.04.01_60/gs_NFV-SOL011v040401p.pdf
+  description: ETSI GS NFV-SOL 011 V4.5.1
+  url: https://www.etsi.org/deliver/etsi_gs/NFV-SOL/001_099/011/04.05.01_60/gs_NFV-SOL011v040501p.pdf
 
 
 basePath: /callback/v1
diff --git a/src/SOL011/NSLifecycleOperationGranting/NSLifecycleOperationGranting.yaml b/src/SOL011/NSLifecycleOperationGranting/NSLifecycleOperationGranting.yaml
index fafe42033dc7d3363ae0bb4ac79ba1ac6c054a15..febb0e5a9fb9c26c23974bead2990383e93c7a25 100644
--- a/src/SOL011/NSLifecycleOperationGranting/NSLifecycleOperationGranting.yaml
+++ b/src/SOL011/NSLifecycleOperationGranting/NSLifecycleOperationGranting.yaml
@@ -14,8 +14,8 @@ info:
     url: https://forge.etsi.org/etsi-forge-copyright-notice.txt
 
 externalDocs:
-  description: ETSI GS NFV-SOL 011 V4.4.1
-  url: https://www.etsi.org/deliver/etsi_gs/NFV-SOL/001_099/011/04.04.01_60/gs_NFV-SOL011v040401p.pdf
+  description: ETSI GS NFV-SOL 011 V4.5.1
+  url: https://www.etsi.org/deliver/etsi_gs/NFV-SOL/001_099/011/04.05.01_60/gs_NFV-SOL011v040501p.pdf
 
 security:
   - OauthSecurity:
diff --git a/src/SOL011/NSPerformanceManagement/NSPerformanceManagement.yaml b/src/SOL011/NSPerformanceManagement/NSPerformanceManagement.yaml
index 8e3397536e4e2127d7982fcf15a41eca504e4d42..5dd0ed17b56521f86b93e6830e9f204707b87770 100644
--- a/src/SOL011/NSPerformanceManagement/NSPerformanceManagement.yaml
+++ b/src/SOL011/NSPerformanceManagement/NSPerformanceManagement.yaml
@@ -17,8 +17,8 @@ info:
     name: "NFV-SOL WG"
 
 externalDocs:
-  description: ETSI GS NFV-SOL 011 V4.4.1
-  url: https://www.etsi.org/deliver/etsi_gs/NFV-SOL/001_099/011/04.04.01_60/gs_NFV-SOL011v040401p.pdf
+  description: ETSI GS NFV-SOL 011 V4.5.1
+  url: https://www.etsi.org/deliver/etsi_gs/NFV-SOL/001_099/011/04.05.01_60/gs_NFV-SOL011v040501p.pdf
 
 basePath: /nspm/v1
 
diff --git a/src/SOL011/NSPerformanceManagementNotification/NSPerformanceManagementNotification.yaml b/src/SOL011/NSPerformanceManagementNotification/NSPerformanceManagementNotification.yaml
index 76188438437b6fc118487834e1754e048b3b876e..f3d2a7af2b232a7f88ed3fc0283f6b6e83a39616 100644
--- a/src/SOL011/NSPerformanceManagementNotification/NSPerformanceManagementNotification.yaml
+++ b/src/SOL011/NSPerformanceManagementNotification/NSPerformanceManagementNotification.yaml
@@ -17,8 +17,8 @@ info:
     name: "NFV-SOL WG"
 
 externalDocs:
-  description: ETSI GS NFV-SOL 011 V4.4.1
-  url: https://www.etsi.org/deliver/etsi_gs/NFV-SOL/001_099/011/04.04.01_60/gs_NFV-SOL011v040401p.pdf
+  description: ETSI GS NFV-SOL 011 V4.5.1
+  url: https://www.etsi.org/deliver/etsi_gs/NFV-SOL/001_099/011/04.05.01_60/gs_NFV-SOL011v040501p.pdf
 
 basePath: /callback/v1