diff --git a/src/SOL002/VNFLifecycleCoordination/VNFLifecycleCoordination.yaml b/src/SOL002/VNFLifecycleCoordination/VNFLifecycleCoordination.yaml
index 1fefbbc95194535cbe14df1f563ca4acf678ef41..649a450e86a61e6044cfa273ec89c50b2da7808c 100644
--- a/src/SOL002/VNFLifecycleCoordination/VNFLifecycleCoordination.yaml
+++ b/src/SOL002/VNFLifecycleCoordination/VNFLifecycleCoordination.yaml
@@ -174,8 +174,8 @@ components:
   responses:
     Coordination.Post:
       description: |
-        Shall be returned when the API producer has chosen the synchronous mode,
-        which may be chosen for coordination actions that finish within the time
+        Shall be returned returned to indicate a finished coordination action when the API producer has
+        chosen the synchronous mode, which may be selected for coordination actions that finish within the time
         frame in which an HTTP response is expected.
         The response body shall contain an LcmCoord data structure that represents
         the result of the coordination action.
@@ -226,6 +226,11 @@ components:
         The HTTP response shall include a "Location" HTTP header that indicates the URI of
         the "Individual coordination action" resource that will be created once the
         coordination operation has finished successfully.
+        Further, the HTTP response may include a "Retry-After" HTTP header that indicates the
+        time to wait before sending the next GET request to the "individual coordination" resource
+        indicated in the "Location" header. If the header is provided, the VNFM shall record the signalled
+        delay value in the "delay" attribute of the applicable entry in the "lcmCoordinations" array in the
+        "VnfLcmOpOcc" structure.
       headers:
         Version:
           description: |
diff --git a/src/SOL002/VNFLifecycleManagement/VNFLifecycleManagement.yaml b/src/SOL002/VNFLifecycleManagement/VNFLifecycleManagement.yaml
index f394a6d8b7ca61a13827bb12865b8baf4aeb8953..180a8ff38a14cf62630522876f7667e8e77bc2e6 100644
--- a/src/SOL002/VNFLifecycleManagement/VNFLifecycleManagement.yaml
+++ b/src/SOL002/VNFLifecycleManagement/VNFLifecycleManagement.yaml
@@ -16,7 +16,7 @@ info:
   license:
     name: ETSI Forge copyright notice
     url: https://forge.etsi.org/etsi-forge-copyright-notice.txt
-  version: 2.0.0-impl:etsi.org:ETSI_NFV_OpenAPI:1
+  version: 2.1.0-impl:etsi.org:ETSI_NFV_OpenAPI:1
 
 externalDocs:
   description: ETSI GS NFV-SOL 002 V3.5.1
diff --git a/src/SOL002/VNFLifecycleManagement/definitions/SOL002VNFLifecycleManagement_def.yaml b/src/SOL002/VNFLifecycleManagement/definitions/SOL002VNFLifecycleManagement_def.yaml
index 498176003a5d0cf270b3a4ca625b265ed849a17d..5d130425e34bc818020503b3f968160b554adea7 100644
--- a/src/SOL002/VNFLifecycleManagement/definitions/SOL002VNFLifecycleManagement_def.yaml
+++ b/src/SOL002/VNFLifecycleManagement/definitions/SOL002VNFLifecycleManagement_def.yaml
@@ -1442,6 +1442,8 @@ definitions:
                 "Individual coordination action" resource within a timeout interval after requesting the coordination
                 to be started or to be cancelled. The length of the timeout interval is defined by means outside
                 the scope of the present document.
+      * NOTE 5: The list of rejected coordinations may be garbage collected if the LCM operation occurrence has
+                reached a terminal state, i.e. one of "COMPLETED", "FAILED" and "ROLLED_BACK".
     type: object
     oneOf:
       - required:
@@ -1629,13 +1631,14 @@ definitions:
             $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/LcmCoordResultType"
           startTime:
             description: >
-              The time when the coordination action has been started.
+              The time when the VNFM has received the confirmation that the coordination action has been started.
             $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/DateTime"
           endTime:
             description: >
-              The end time of the coordination action. Shall be present for a coordination
-              action that has finished or timed out (see note 4) and shall be absent if
-              the coordination is ongoing.
+              The end time when the VNFM has received the confirmation thatof the coordination action
+              has finished or has been cancelled, or the time when a coordination action has timed out.
+              Shall be present for a coordination action that has finished or timed out (see note 4) and
+              shall be absent if the coordination is ongoing.
             $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/DateTime"
           endpointType:
             description: >
@@ -1647,6 +1650,45 @@ definitions:
             enum:
               - MGMT
               - VNF
+          delay:
+            description: >
+              The end of the delay period.
+              This attribute shall be present if the last known HTTP response related to this coordination
+              has contained a "Retry-After" header, and shall be absent otherwise.
+            $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/DateTime"
+      rejectedLcmCoordinations:
+        description: >
+          Information about LCM coordination actions (see clause 10) that were rejected by 503 error which
+          means they will be tried again after a delay. See note 5.
+        type: object
+        required:
+          - coordinationActionName
+          - rejectionTime
+          - endpointType
+          - delay
+        properties:
+          coordinationActionName:
+            description: >
+              Indicator of the actual coordination action.
+            $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/Identifier"
+          rejectionTime:
+            description: >
+              The time when the VNFM has received the 503 response that rejects the actual coordination.
+            $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/DateTime"
+          endpointType:
+            description: >
+              The endpoint type used by this coordination action.
+              Valid values:
+              - MGMT: coordination with other operation supporting management systems (e.g. EM)
+              - VNF: coordination with the VNF instance
+            type: string
+            enum:
+              - MGMT
+              - VNF
+          delay:
+            description: >
+              The end of the delay period, as calculated from the startTime and "Retry-After" header.
+            $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/DateTime"
       warnings:
         description: >
           Warning messages that were generated while the operation was executing.
diff --git a/src/definitions/SOL002SOL003_def.yaml b/src/definitions/SOL002SOL003_def.yaml
index 0ce395f4fa1b1cfb0f6ae6895c0ac1c80b74ce9d..eec1336177be93ee67a8b0d60d1cdfcf6e37228d 100644
--- a/src/definitions/SOL002SOL003_def.yaml
+++ b/src/definitions/SOL002SOL003_def.yaml
@@ -565,7 +565,9 @@ definitions:
         $ref: "#/definitions/IdentifierInVim"
       extCps:
         description: >
-          External CPs of the VNF to be connected to this external VL.
+          External CPs of the VNF to be connected to this external VL. Entries in the list of external
+          CP data that are unchanged need not be supplied if the ExtVirtualLinkData structure is part
+          of a request or response that modifies the external connectivity.
         type: array
         items:
           $ref: "#/definitions/VnfExtCpData"