diff --git a/SOL002/VNFPerformanceManagement-API/IndividualThreshold.robot b/SOL002/VNFPerformanceManagement-API/IndividualThreshold.robot
index 1a68cdce9f44f0d19583cfa4b1e962ce4316dbbc..702b3f80e7375828ce97bbb685a3d079d922a523 100644
--- a/SOL002/VNFPerformanceManagement-API/IndividualThreshold.robot
+++ b/SOL002/VNFPerformanceManagement-API/IndividualThreshold.robot
@@ -84,17 +84,32 @@ PUT Individual Threshold - Method not implemented
     Check HTTP Response Status Code Is    405
     Check Postcondition VNF Performance Threshold is Unmodified (Implicit)
 
-PATCH Individual Threshold - Method not implemented
+PATCH Individual Threshold 
     [Documentation]    Test ID: 6.3.3.5.7
-    ...    Test title: PATCH Individual Threshold - Method not implemented
-    ...    Test objective: The objective is to test that PATCH method is not allowed to modify an existing VNF Performance threshold
+    ...    Test title: PATCH Individual Threshold 
+    ...    Test objective: The objective is to test that PATCH method allows to modify an Individual threshold resource.
     ...    Pre-conditions: A VNF instance is instantiated. One or more VNF performance thresholds are set in the VNFM.
     ...    Reference: Clause 6.4.6.3.4 - ETSI GS NFV-SOL 002 [2] v2.6.1
     ...    Config ID: Config_prod_VNFM
     ...    Applicability: none
     ...    Post-Conditions: The VNF Performance Threshold is not modified by the operation
     Send Patch request for individual VNF Performance Threshold
-    Check HTTP Response Status Code Is    405
+    Check HTTP Response Status Code Is    200
+    Check HTTP Response Body Json Schema Is    ThresholdModification
+    
+    
+PATCH Individual Threshold - Precondition failed
+    [Documentation]    Test ID: 6.3.3.5.8
+    ...    Test title: PATCH Individual Threshold - Preconition failed
+    ...    Test objective: The objective is to attempt to modify an individual threshold resource, where the precondition was not met.
+    ...    Pre-conditions:  A VNF instance is instantiated. One or more VNF performance jobs are set in the VNFM.
+    ...    Reference: Clause 6.4.6.3.4 - ETSI GS NFV-SOL 002 [2] v2.6.1
+    ...    Config ID: Config_prod_VNFM
+    ...    Applicability: none
+    ...    Post-Conditions:  The VNF Performance Job is not modified by the operation
+    Send Patch request for individual VNF Performance Threshold
+    Check HTTP Response Status Code Is    412
+    Check HTTP Response Body Json Schema Is   ProblemDetails
     Check Postcondition VNF Performance Threshold is Unmodified (Implicit)
 
 *** Keywords ***
@@ -148,11 +163,10 @@ Send Put request for individual VNF Performance Threshold
 
 Send Patch request for individual VNF Performance Threshold
     Log    Trying to PUT threshold
-    Set Headers    {"Accept": "${ACCEPT_JSON}"}
-    Run Keyword If    ${AUTH_USAGE} == 1    Set Headers    {"Authorization": ${AUTHORIZATION}"}
-    GET    ${apiRoot}/${apiName}/${apiVersion}/thresholds/${thresholdId}
-    ${origOutput}=    Output    response
-    Set Suite Variable    ${origResponse}    ${origOutput}
+    Set Headers  {"Accept":"${ACCEPT_JSON}"} 
+    Set Headers  {"Content-Type": "${CONTENT_TYPE_JSON}"} 
+    Run Keyword If    ${AUTH_USAGE} == 1    Set Headers    {"Authorization":"${AUTHORIZATION}"}
+    ${body}=    Get File    jsons/ThresholdModification.json
     PATCH    ${apiRoot}/${apiName}/${apiVersion}/thresholds/${thresholdId}
     ${output}=    Output    response
     Set Suite Variable    ${response}    ${output}
diff --git a/SOL002/VNFPerformanceManagement-API/jsons/ThresholdModification.json b/SOL002/VNFPerformanceManagement-API/jsons/ThresholdModification.json
new file mode 100644
index 0000000000000000000000000000000000000000..3aeb5f91c199064546693cd63b88c434584c3d92
--- /dev/null
+++ b/SOL002/VNFPerformanceManagement-API/jsons/ThresholdModification.json
@@ -0,0 +1,3 @@
+{
+	"callbackUri":"127.0.0.1"
+}
\ No newline at end of file