diff --git a/SOL003/VNFLifecycleManagement-API/ChangeVNFFlavourWorkflow.robot b/SOL003/VNFLifecycleManagement-API/ChangeVNFFlavourWorkflow.robot
index 81742b03fb419c93617b9370b0c3bff7f75b12df..81743ba4ceb186611b1f1dc18a1a242a5f007271 100644
--- a/SOL003/VNFLifecycleManagement-API/ChangeVNFFlavourWorkflow.robot
+++ b/SOL003/VNFLifecycleManagement-API/ChangeVNFFlavourWorkflow.robot
@@ -16,7 +16,7 @@ Suite Teardown    Terminate All Processes    kill=true
 
 
 *** Test Cases ***
-Scale out a VNF Instance
+Change VNF Flavour Operation
     [Documentation]    Test ID: 5.x.y.x
     ...    Test title: Change VNF Flavour Operation
     ...    Test objective: The objective is to test a change flavour operation of an existing VNF instance
@@ -25,7 +25,7 @@ Scale out a VNF Instance
     ...    Config ID: Config_prod_VNFM
     ...    Applicability: change flavour operation is supported for the VNF (as capability in the VNFD)
     ...    Post-Conditions: VNF instance still in INSTANTIATED state and the flavour is changed
-    Send VNF Scale Out Request
+    Send Change VNF Flavour Request
     Check HTTP Response Status Code Is    202
     Check HTTP Response Header Contains    Location 
     Check Operation Occurrence Id
diff --git a/SOL003/VNFLifecycleManagement-API/OperateVNFWorkflow.robot b/SOL003/VNFLifecycleManagement-API/OperateVNFWorkflow.robot
new file mode 100644
index 0000000000000000000000000000000000000000..8721f2067980860b4c84dca5f7e32e1ee70326f2
--- /dev/null
+++ b/SOL003/VNFLifecycleManagement-API/OperateVNFWorkflow.robot
@@ -0,0 +1,62 @@
+*** Settings ***
+Resource    environment/configuration.txt
+Resource    environment/variables.txt
+Resource    environment/scaleVariables.txt
+Resource    VnfLcmMntOperationKeywords.robot
+Resource    SubscriptionKeywords.robot
+Library    REST    ${VNFM_SCHEMA}://${VNFM_HOST}:${VNFM_PORT}    
+...    spec=SOL003-VNFLifecycleManagement-API.yaml
+Library    OperatingSystem
+Library    BuiltIn
+Library    Collections
+Library    JSONLibrary
+Library    Process
+Suite Setup    Initialize System
+Suite Teardown    Terminate All Processes    kill=true
+
+
+*** Test Cases ***
+Operate a VNF Instance
+    [Documentation]    Test ID: 5.x.y.x
+    ...    Test title: Operate a VNF Instance
+    ...    Test objective: The objective is to change the operational state of a VNF instance.
+    ...    Pre-conditions: VNF instance in INSTANTIATED state (Test ID: 5.a.b.c)
+    ...    Reference: section 5.3.3 - SOL003 v2.4.1
+    ...    Config ID: Config_prod_VNFM
+    ...    Applicability: change the operational state of a VNF instance is supported for the VNF (as capability in the VNFD)
+    ...    Post-Conditions: VNF instance still in INSTANTIATED state and the operational state is changed
+    Send Change VNF Operational State Request
+    Check HTTP Response Status Code Is    202
+    Check HTTP Response Header Contains    Location 
+    Check Operation Occurrence Id
+    Check Operation Notification For Operate    STARTING
+    Create a new Grant - Sync - OPERATE
+    Check Operation Notification For Change Flavour    PROCESSING
+    Check Operation Notification For Change Flavour    COMPLETED
+    Check Postcondition VNF    OPERATE
+
+*** Keywords ***
+
+Initialize System
+    Create Sessions
+    ${body}=    Get File    json/operateVnFRequest.json
+    ${changeVnfOperateRequest}=    evaluate    json.loads('''${body}''')    json
+    ${requestedState}=    Get Value From Json    ${changeVnfOperateRequest}    $..changeStateTo 
+    
+Precondition Checks
+    Check resource instantiated
+    ${LccnSubscriptions}=    Check subscriptions about one VNFInstance and operation type    ${vnfInstanceId}    VnfLcmOperationOccurrenceNotification    operationType=SCALE
+
+Check Postcondition VNF
+    [Arguments]    ${operation}
+    Check resource instantiated
+    ${newState}=    Get Vnf Operational State Info    ${vnfInstanceId}
+    Should be Equal    ${requestedState}    ${newState}
+    
+Create a new Grant - Sync - OPERATE
+    Create a new Grant - Synchronous mode        ${vnfInstanceId}    ${vnfLcmOpOccId}    OPERATE
+    
+Check Operation Notification For Operate 
+    [Arguments]    ${status}
+    Check Operation Notification    VnfLcmOperationOccurrenceNotification   ${status}
+    
\ No newline at end of file
diff --git a/SOL003/VNFLifecycleManagement-API/VnfLcmMntOperationKeywords.robot b/SOL003/VNFLifecycleManagement-API/VnfLcmMntOperationKeywords.robot
index 49cc5cbb79b499b2898e935ebe82fbce0a7d1232..c72ab61d24b7481239b49d8f62b2c45235425e90 100644
--- a/SOL003/VNFLifecycleManagement-API/VnfLcmMntOperationKeywords.robot
+++ b/SOL003/VNFLifecycleManagement-API/VnfLcmMntOperationKeywords.robot
@@ -66,6 +66,12 @@ Get Vnf Flavour Info
     ${flavourInfo}=    Get Value From Json    ${vnfInstance}    $..flavourId
     [Return]    ${flavourInfo}
 
+Get Vnf Operational State Info
+    [Arguments]    ${vnfInstanceId}
+    ${vnfInstance}=    Get Vnf Instance    ${vnfInstanceId}
+    ${stateInfo}=    Get Value From Json    ${vnfInstance}    $..vnfState
+    [Return]    ${stateInfo}
+
 Check HTTP Response Header Contains
     [Arguments]    ${CONTENT_TYPE}
     Should Contain    ${response.headers}    ${CONTENT_TYPE}
@@ -112,6 +118,14 @@ Send Change VNF Flavour Request
     Run Keyword If    ${AUTH_USAGE} == 1    Set Headers    {"Authorization":"${AUTHORIZATION}"}
     ${body}=    Get File    json/changeVnfFlavourRequest.json
     ${response}=    Post    ${apiRoot}/${apiName}/${apiVersion}/vnf_instances/${vnfInstanceId}/change_flavour    ${body}
+
+Send Change VNF Operational State Request
+    Log    Trying to change the operational state of a VNF instance.
+    Set Headers  {"Accept":"${ACCEPT}"}  
+    Set Headers  {"Content-Type": "${CONTENT_TYPE}"}
+    Run Keyword If    ${AUTH_USAGE} == 1    Set Headers    {"Authorization":"${AUTHORIZATION}"}
+    ${body}=    Get File    json/operateVnFRequest.json
+    ${response}=    Post    ${apiRoot}/${apiName}/${apiVersion}/vnf_instances/${vnfInstanceId}/operate    ${body}
   
 Create a new Grant - Synchronous mode
     [Arguments]    ${vnfInstanceId}    ${vnfLcmOpOccId}    ${operation}