diff --git a/SOL003/VNFPackageManagement-API_nxw/IndividualSubscription.robot b/SOL003/VNFPackageManagement-API_nxw/IndividualSubscription.robot
index 2dd72876a0bc70132ba34165952d5341205a1938..ee36ae80b1064022dde83f7d05678b0eb15253e9 100644
--- a/SOL003/VNFPackageManagement-API_nxw/IndividualSubscription.robot
+++ b/SOL003/VNFPackageManagement-API_nxw/IndividualSubscription.robot
@@ -16,7 +16,8 @@ GET Individual Subscription
     Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
     Log    Received a 200 OK as expected
     ${result}=    Get Response Body
-    Validate Json    PkgmSubscription.schema.json    ${result}
+    ${json}=    evaluate    json.loads('''${result}''')    json
+    Validate Json    PkgmSubscription.schema.json    ${json}
     Log    Validated PkgmSubscription schema
 
 GET Subscription - Negative (Not Found)
@@ -28,9 +29,10 @@ GET Subscription - Negative (Not Found)
     Response Status Code Should Equal    404
     Log    Received 404 Not Found as expected
     ${problemDetails}=    Get Response Body
+    ${json}=    evaluate    json.loads('''${problemDetails}''')    json
     Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
     Log    Trying to validate ProblemDetails
-    Validate Json    ProblemDetails.schema.json    ${problemDetails}
+    Validate Json    ProblemDetails.schema.json    ${json}
     Log    Validation OK
 
 GET Subscription - Negative (Unauthorized: Wrong Token)
@@ -42,9 +44,10 @@ GET Subscription - Negative (Unauthorized: Wrong Token)
     Response Status Code Should Equal    401
     Log    Received 401 Unauthorized as expected
     ${problemDetails}=    Get Response Body
+    ${json}=    evaluate    json.loads('''${problemDetails}''')    json
     Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
     Log    Trying to validate ProblemDetails
-    Validate Json    ProblemDetails.schema.json    ${problemDetails}
+    Validate Json    ProblemDetails.schema.json    ${json}
     Log    Validation OK
 
 DELETE Subscription
@@ -72,9 +75,10 @@ DELETE Subscription - Negative (Not Found)
     Response Status Code Should Equal    404
     Log    The subscriptionId is not present in database
     ${problemDetails}=    Get Response Body
+    ${json}=    evaluate    json.loads('''${problemDetails}''')    json
     Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
     Log    Trying to validate ProblemDetails
-    Validate Json    ProblemDetails.schema.json    ${problemDetails}
+    Validate Json    ProblemDetails.schema.json    ${json}
     Log    Validation OK
 
 PUT Subscription - (Method not implemented)
@@ -85,23 +89,12 @@ PUT Subscription - (Method not implemented)
     PUT    ${apiRoot}/${apiName}/${apiVersion}/subscriptions/${subscriptionId}
     Response Status Code Should Equal    405
     Log    Received 405 Method not implemented as expected
-    #${problemDetails}=    Get Response Body
-    #Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
-    #Log    Trying to validate ProblemDetails
-    #Validate Json    ProblemDetails.schema.json    ${problemDetails}
-    #Log    Validation OK
 
 PATCH Subscription - (Method not implemented)
     Log    Trying to perform a PATCH. This method should not be implemented
     Create HTTP Context    ${NFVO_HOST}:${NFVO_PORT}    ${NFVO_SCHEMA}
     Set Request Header    Accept    ${ACCEPT_JSON}
     Run Keyword If    ${AUTH_USAGE} == 1    Set Request Header    Authorization    ${AUTHORIZATION}
-    Http Request    "PATCH"    ${apiRoot}/${apiName}/${apiVersion}/subscriptions/${subscriptionId}
-    #PATCH    ${apiRoot}/${apiName}/${apiVersion}/subscriptions/${subscriptionId}
+    Http Request    PATCH    ${apiRoot}/${apiName}/${apiVersion}/subscriptions/${subscriptionId}
     Response Status Code Should Equal    405
     Log    Received 405 Method not implemented as expected
-    #${problemDetails}=    Get Response Body
-    #Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
-    #Log    Trying to validate ProblemDetails
-    #Validate Json    ProblemDetails.schema.json    ${problemDetails}
-    #Log    Validation OK
diff --git a/SOL003/VNFPackageManagement-API_nxw/IndividualVNFPackage.robot b/SOL003/VNFPackageManagement-API_nxw/IndividualVNFPackage.robot
index 640833471a46f71ceb90af62fbcc651e8bd5ff7d..5e95a31906f45765283764a716673a0e1d9d001d 100644
--- a/SOL003/VNFPackageManagement-API_nxw/IndividualVNFPackage.robot
+++ b/SOL003/VNFPackageManagement-API_nxw/IndividualVNFPackage.robot
@@ -13,9 +13,10 @@ GET Individual VNF Package
     GET    ${apiRoot}/${apiName}/${apiVersion}/vnf_packages/${vnfPackageId}
     Response Status Code Should Equal    200
     ${vnfPkgInfo}=    Get Response Body
+    ${json}=    evaluate    json.loads('''${vnfPkgInfo}''')    json
     Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
     Log    Trying to validate response
-    Validate Json    vnfPkgInfo.schema.json    ${vnfPkgInfo}
+    Validate Json    vnfPkgInfo.schema.json    ${json}
     Log    Validation OK
 
 GET Individual VNF Package - Negative (Not Found)
@@ -27,9 +28,10 @@ GET Individual VNF Package - Negative (Not Found)
     Response Status Code Should Equal    404
     Log    Received 404 Not Found as expected
     ${problemDetails}=    Get Response Body
+    ${json}=    evaluate    json.loads('''${problemDetails}''')    json
     Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
     Log    Trying to validate ProblemDetails
-    Validate Json    ProblemDetails.schema.json    ${problemDetails}
+    Validate Json    ProblemDetails.schema.json    ${json}
     Log    Validation OK
 
 GET Individual VNF Package - Negative (Unauthorized: Wrong Token)
@@ -42,9 +44,10 @@ GET Individual VNF Package - Negative (Unauthorized: Wrong Token)
     Response Status Code Should Equal    401
     Log    Received 401 Unauthorized as expected
     ${problemDetails}=    Get Response Body
+    ${json}=    evaluate    json.loads('''${problemDetails}''')    json
     Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
     Log    Trying to validate ProblemDetails
-    Validate Json    ProblemDetails.schema.json    ${problemDetails}
+    Validate Json    ProblemDetails.schema.json    ${json}
     Log    Validation OK
 
 GET Individual VNF Package - Negative (Unauthorized: No Token)
@@ -56,9 +59,10 @@ GET Individual VNF Package - Negative (Unauthorized: No Token)
     Response Status Code Should Equal    401
     Log    Received 401 Unauthorized as expected
     ${problemDetails}=    Get Response Body
+    ${json}=    evaluate    json.loads('''${problemDetails}''')    json
     Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
     Log    Trying to validate ProblemDetails
-    Validate Json    ProblemDetails.schema.json    ${problemDetails}
+    Validate Json    ProblemDetails.schema.json    ${json}
     Log    Validation OK
 
 POST Individual VNF Package - (Method not implemented)
@@ -69,11 +73,6 @@ POST Individual VNF Package - (Method not implemented)
     POST    ${apiRoot}/${apiName}/${apiVersion}/vnf_packages/${vnfPackageId}
     Response Status Code Should Equal    405
     Log    Received 405 Method not implemented as expected
-    #${problemDetails}=    Get Response Body
-    #Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
-    #Log    Trying to validate ProblemDetails
-    #Validate Json    ProblemDetails.schema.json    ${problemDetails}
-    #Log    Validation OK
 
 PUT Individual VNF Package - (Method not implemented)
     Log    Trying to perform a PUT. This method should not be implemented
@@ -83,26 +82,15 @@ PUT Individual VNF Package - (Method not implemented)
     PUT    ${apiRoot}/${apiName}/${apiVersion}/vnf_packages/${vnfPackageId}
     Response Status Code Should Equal    405
     Log    Received 405 Method not implemented as expected
-    #${problemDetails}=    Get Response Body
-    #Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
-    #Log    Trying to validate ProblemDetails
-    #Validate Json    ProblemDetails.schema.json    ${problemDetails}
-    #Log    Validation OK
 
 PATCH Individual VNF Package - (Method not implemented)
     Log    Trying to perform a PATCH. This method should not be implemented
     Create HTTP Context    ${NFVO_HOST}:${NFVO_PORT}    ${NFVO_SCHEMA}
     Set Request Header    Accept    ${ACCEPT_JSON}
     Run Keyword If    ${AUTH_USAGE} == 1    Set Request Header    Authorization    ${AUTHORIZATION}
-    Http Request    "PATCH"    ${apiRoot}/${apiName}/${apiVersion}/vnf_packages/${vnfPackageId}
-    #PATCH    ${apiRoot}/${apiName}/${apiVersion}/vnf_packages/${vnfPackageId}
+    Http Request    PATCH    ${apiRoot}/${apiName}/${apiVersion}/vnf_packages/${vnfPackageId}
     Response Status Code Should Equal    405
     Log    Received 405 Method not implemented as expected
-    #${problemDetails}=    Get Response Body
-    #Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
-    #Log    Trying to validate ProblemDetails
-    #Validate Json    ProblemDetails.schema.json    ${problemDetails}
-    #Log    Validation OK
 
 DELETE Individual VNF Package - (Method not implemented)
     Log    Trying to perform a DELETE. This method should not be implemented
@@ -112,8 +100,3 @@ DELETE Individual VNF Package - (Method not implemented)
     DELETE    ${apiRoot}/${apiName}/${apiVersion}/vnf_packages/${vnfPackageId}
     Response Status Code Should Equal    405
     Log    Received 405 Method not implemented as expected
-    #${problemDetails}=    Get Response Body
-    #Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
-    #Log    Trying to validate ProblemDetails
-    #Validate Json    ProblemDetails.schema.json    ${problemDetails}
-    #Log    Validation OK
diff --git a/SOL003/VNFPackageManagement-API_nxw/Subscriptions.robot b/SOL003/VNFPackageManagement-API_nxw/Subscriptions.robot
index a3780ea0561990f59dd6b73a9e2ed68364aa05ec..67aed17a9230003e4979a52606428debab9b8e77 100644
--- a/SOL003/VNFPackageManagement-API_nxw/Subscriptions.robot
+++ b/SOL003/VNFPackageManagement-API_nxw/Subscriptions.robot
@@ -16,7 +16,8 @@ GET Subscription
     Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
     Log    Received a 200 OK as expected
     ${result}=    Get Response Body
-    Validate Json    PkgmSubscription.schema.json    ${result}
+    ${json}=    evaluate    json.loads('''${result}''')    json
+    Validate Json    PkgmSubscription.schema.json    ${json}
     Log    Validated PkgmSubscription schema
 
 GET Subscription - Filter
@@ -29,7 +30,8 @@ GET Subscription - Filter
     Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
     Log    Received a 200 OK as expected
     ${result}=    Get Response Body
-    Validate Json    PkgmSubscription.schema.json    ${result}
+    ${json}=    evaluate    json.loads('''${result}''')    json
+    Validate Json    PkgmSubscription.schema.json    ${json}
     Log    Validated PkgmSubscription schema
 
 GET Subscription - Negative Filter
@@ -42,9 +44,10 @@ GET Subscription - Negative Filter
     Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
     Log    Received a 400 Bad Request as expected
     ${problemDetails}=    Get Response Body
+    ${json}=    evaluate    json.loads('''${problemDetails}''')    json
     Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
     Log    Trying to validate ProblemDetails
-    Validate Json    ProblemDetails.schema.json    ${problemDetails}
+    Validate Json    ProblemDetails.schema.json    ${json}
     Log    Validation OK
 
 GET Subscription - Negative (Not Found)
@@ -56,9 +59,10 @@ GET Subscription - Negative (Not Found)
     Response Status Code Should Equal    404
     Log    Received 404 Not Found as expected
     ${problemDetails}=    Get Response Body
+    ${json}=    evaluate    json.loads('''${problemDetails}''')    json
     Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
     Log    Trying to validate ProblemDetails
-    Validate Json    ProblemDetails.schema.json    ${problemDetails}
+    Validate Json    ProblemDetails.schema.json    ${json}
     Log    Validation OK
 
 GET Subscription - Negative (Unauthorized: Wrong Token)
@@ -70,9 +74,10 @@ GET Subscription - Negative (Unauthorized: Wrong Token)
     Response Status Code Should Equal    401
     Log    Received 401 Unauthorized as expected
     ${problemDetails}=    Get Response Body
+    ${json}=    evaluate    json.loads('''${problemDetails}''')    json
     Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
     Log    Trying to validate ProblemDetails
-    Validate Json    ProblemDetails.schema.json    ${problemDetails}
+    Validate Json    ProblemDetails.schema.json    ${json}
     Log    Validation OK
 
 POST Subscription
@@ -88,8 +93,9 @@ POST Subscription
     Log    Received 201 Created as expected
     Response Should Have Header    Location
     Log    Response has header Location
-    ${response}    Get Response Body
-    Validate Json    PkgmSubscription.schema.json    ${response}
+    ${result}=    Get Response Body
+    ${json}=    evaluate    json.loads('''${result}''')    json
+    Validate Json    PkgmSubscription.schema.json    ${json}
     Log    Validation of PkgmSubscription OK
 
 POST Subscription - DUPLICATION
@@ -106,8 +112,9 @@ POST Subscription - DUPLICATION
     Log    Received 201 Created as expected
     Response Should Have Header    Location
     Log    Response has header Location
-    ${response}    Get Response Body
-    Validate Json    PkgmSubscription.schema.json    ${response}
+    ${result}    Get Response Body
+    ${json}=    evaluate    json.loads('''${result}''')    json
+    Validate Json    PkgmSubscription.schema.json    ${json}
     Log    Validation of PkgmSubscription OK
 
 POST Subscription - NO DUPLICATION
@@ -124,9 +131,9 @@ POST Subscription - NO DUPLICATION
     Log    Received 303 See Other as expected
     Response Should Have Header    Location
     Log    Response header contains Location
-    ${result}=    Get Response Body
-    ${count}=    Get Length    ${result}
-    Run Keyword If    $count == 0    Response body is empty as expected
+    Comment    ${result}=    Get Response Body
+    Comment    ${count}=    Get Length    ${result}
+    Comment    Run Keyword If    $count == 0    Response body is empty as expected
 
 PUT Subscription - (Method not implemented)
     Log    Trying to perform a PUT. This method should not be implemented
@@ -136,26 +143,15 @@ PUT Subscription - (Method not implemented)
     PUT    ${apiRoot}/${apiName}/${apiVersion}/subscriptions
     Response Status Code Should Equal    405
     Log    Received 405 Method not implemented as expected
-    #${problemDetails}=    Get Response Body
-    #Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
-    #Log    Trying to validate ProblemDetails
-    #Validate Json    ProblemDetails.schema.json    ${problemDetails}
-    #Log    Validation OK
 
 PATCH Subscription - (Method not implemented)
     Log    Trying to perform a PATCH. This method should not be implemented
     Create HTTP Context    ${NFVO_HOST}:${NFVO_PORT}    ${NFVO_SCHEMA}
     Set Request Header    Accept    ${ACCEPT_JSON}
     Run Keyword If    ${AUTH_USAGE} == 1    Set Request Header    Authorization    ${AUTHORIZATION}
-    Http Request    "PATCH"    ${apiRoot}/${apiName}/${apiVersion}/subscriptions
-    #PATCH    ${apiRoot}/${apiName}/${apiVersion}/subscriptions
+    Http Request    PATCH    ${apiRoot}/${apiName}/${apiVersion}/subscriptions
     Response Status Code Should Equal    405
     Log    Received 405 Method not implemented as expected
-    #${problemDetails}=    Get Response Body
-    #Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
-    #Log    Trying to validate ProblemDetails
-    #Validate Json    ProblemDetails.schema.json    ${problemDetails}
-    #Log    Validation OK
 
 DELETE Subscription - (Method not implemented)
     Log    Trying to perform a DELETE. This method should not be implemented
@@ -165,8 +161,3 @@ DELETE Subscription - (Method not implemented)
     DELETE    ${apiRoot}/${apiName}/${apiVersion}/subscriptions
     Response Status Code Should Equal    405
     Log    Received 405 Method not implemented as expected
-    #${problemDetails}=    Get Response Body
-    #Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
-    #Log    Trying to validate ProblemDetails
-    #Validate Json    ProblemDetails.schema.json    ${problemDetails}
-    #Log    Validation OK
diff --git a/SOL003/VNFPackageManagement-API_nxw/VNFDInIndividualVNFPackage.robot b/SOL003/VNFPackageManagement-API_nxw/VNFDInIndividualVNFPackage.robot
index 819da448d2bc704abe5665ba3e8e3beb06138cd1..4f19ff4f7b2753844ed2f88ada2b19054365a5cf 100644
--- a/SOL003/VNFPackageManagement-API_nxw/VNFDInIndividualVNFPackage.robot
+++ b/SOL003/VNFPackageManagement-API_nxw/VNFDInIndividualVNFPackage.robot
@@ -59,9 +59,10 @@ GET VNFD in Individual VNF Package - Negative (PLAIN/ZIP)
     GET    ${apiRoot}/${apiName}/${apiVersion}/vnf_packages/${vnfPkgZipVNFD}/vnfd
     Response Status Code Should Equal    406
     ${problemDetails}=    Get Response Body
+    ${json}=    evaluate    json.loads('''${problemDetails}''')    json
     Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
     Log    Trying to validate ProblemDetails
-    Validate Json    ProblemDetails.schema.json    ${problemDetails}
+    Validate Json    ProblemDetails.schema.json    ${json}
     Log    Validation OK
 
 GET Individual VNF Package - Negative (Not Found)
@@ -74,9 +75,10 @@ GET Individual VNF Package - Negative (Not Found)
     Response Status Code Should Equal    404
     Log    Received 404 Not Found as expected
     ${problemDetails}=    Get Response Body
+    ${json}=    evaluate    json.loads('''${problemDetails}''')    json
     Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
     Log    Trying to validate ProblemDetails
-    Validate Json    ProblemDetails.schema.json    ${problemDetails}
+    Validate Json    ProblemDetails.schema.json    ${json}
     Log    Validation OK
 
 GET Individual VNF Package - Negative (Unauthorized: Wrong Token)
@@ -90,9 +92,10 @@ GET Individual VNF Package - Negative (Unauthorized: Wrong Token)
     Response Status Code Should Equal    401
     Log    Received 401 Unauthorized as expected
     ${problemDetails}=    Get Response Body
+    ${json}=    evaluate    json.loads('''${problemDetails}''')    json
     Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
     Log    Trying to validate ProblemDetails
-    Validate Json    ProblemDetails.schema.json    ${problemDetails}
+    Validate Json    ProblemDetails.schema.json    ${json}
     Log    Validation OK
 
 GET Individual VNF Package - Negative (Unauthorized: No Token)
@@ -104,9 +107,10 @@ GET Individual VNF Package - Negative (Unauthorized: No Token)
     Response Status Code Should Equal    401
     Log    Received 401 Unauthozired as expected
     ${problemDetails}=    Get Response Body
+    ${json}=    evaluate    json.loads('''${problemDetails}''')    json
     Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
     Log    Trying to validate ProblemDetails
-    Validate Json    ProblemDetails.schema.json    ${problemDetails}
+    Validate Json    ProblemDetails.schema.json    ${json}
     Log    Validation OK
 
 GET VNFD in Individual VNF Package - Negative (onboardingState issue)
@@ -119,9 +123,10 @@ GET VNFD in Individual VNF Package - Negative (onboardingState issue)
     Response Status Code Should Equal    409
     Log    Received 409 Conflict as expected
     ${problemDetails}=    Get Response Body
+    ${json}=    evaluate    json.loads('''${problemDetails}''')    json
     Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
     Log    Trying to validate ProblemDetails
-    Validate Json    ProblemDetails.schema.json    ${problemDetails}
+    Validate Json    ProblemDetails.schema.json    ${json}
     Log    Validation OK
 
 POST all PACKAGE (Method not implemented)
@@ -132,11 +137,6 @@ POST all PACKAGE (Method not implemented)
     POST    ${apiRoot}/${apiName}/${apiVersion}/vnf_packages/${vnfPackageId}/vnfd
     Response Status Code Should Equal    405
     Log    Received 405 Method not implemented as expected
-    #${problemDetails}=    Get Response Body
-    #Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
-    #Log    Trying to validate ProblemDetails
-    #Validate Json    ProblemDetails.schema.json    ${problemDetails}
-    #Log    Validation OK
 
 PUT all PACKAGE (Method not implemented)
     Log    Trying to perform a PUT. This method should not be implemented
@@ -146,26 +146,15 @@ PUT all PACKAGE (Method not implemented)
     PUT    ${apiRoot}/${apiName}/${apiVersion}/vnf_packages/${vnfPackageId}/vnfd
     Response Status Code Should Equal    405
     Log    Received 405 Method not implemented as expected
-    #${problemDetails}=    Get Response Body
-    #Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
-    #Log    Trying to validate ProblemDetails
-    #Validate Json    ProblemDetails.schema.json    ${problemDetails}
-    #Log    Validation OK
 
 PATCH all PACKAGE (Method not implemented)
     Log    Trying to perform a PATCH. This method should not be implemented
     Create HTTP Context    ${NFVO_HOST}:${NFVO_PORT}    ${NFVO_SCHEMA}
     Set Request Header    Accept    ${ACCEPT_JSON}
     Run Keyword If    ${AUTH_USAGE} == 1    Set Request Header    Authorization    ${AUTHORIZATION}
-    Http Request    "PATCH"    ${apiRoot}/${apiName}/${apiVersion}/vnf_packages/${vnfPackageId}/vnfd
-    #PATCH    ${apiRoot}/${apiName}/${apiVersion}/vnf_packages/${vnfPackageId}/vnfd
+    Http Request    PATCH    ${apiRoot}/${apiName}/${apiVersion}/vnf_packages/${vnfPackageId}/vnfd
     Response Status Code Should Equal    405
     Log    Received 405 Method not implemented as expected
-    #${problemDetails}=    Get Response Body
-    #Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
-    #Log    Trying to validate ProblemDetails
-    #Validate Json    ProblemDetails.schema.json    ${problemDetails}
-    #Log    Validation OK
 
 DELETE all PACKAGE (Method not implemented)
     Log    Trying to perform a DELETE. This method should not be implemented
@@ -175,8 +164,3 @@ DELETE all PACKAGE (Method not implemented)
     DELETE    ${apiRoot}/${apiName}/${apiVersion}/vnf_packages/${vnfPackageId}
     Response Status Code Should Equal    405
     Log    Received 405 Method not implemented as expected
-    #${problemDetails}=    Get Response Body
-    #Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
-    #Log    Trying to validate ProblemDetails
-    #Validate Json    ProblemDetails.schema.json    ${problemDetails}
-    #Log    Validation OK
diff --git a/SOL003/VNFPackageManagement-API_nxw/VNFPackageArtifacts.robot b/SOL003/VNFPackageManagement-API_nxw/VNFPackageArtifacts.robot
index 09ed0deaa6b4ae265e437b66da323e1b9b45c6a4..e7cca22117ebfbbfa9555e326b395f540469c382 100644
--- a/SOL003/VNFPackageManagement-API_nxw/VNFPackageArtifacts.robot
+++ b/SOL003/VNFPackageManagement-API_nxw/VNFPackageArtifacts.robot
@@ -49,9 +49,10 @@ GET VNF Package Artifact - Negative Range
     Response Status Code Should Equal    416
     Log    Received 416 Range not satisfiable as expected.
     ${problemDetails}=    Get Response Body
+    ${json}=    evaluate    json.loads('''${problemDetails}''')    json
     Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
     Log    Trying to validate ProblemDetails
-    Validate Json    ProblemDetails.schema.json    ${problemDetails}
+    Validate Json    ProblemDetails.schema.json    ${json}
     Log    Validation OK
 
 GET VNF Package Artifact- Negative (Not Found)
@@ -63,9 +64,10 @@ GET VNF Package Artifact- Negative (Not Found)
     Response Status Code Should Equal    404
     Log    Received 404 Not Found as expected
     ${problemDetails}=    Get Response Body
+    ${json}=    evaluate    json.loads('''${problemDetails}''')    json
     Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
     Log    Trying to validate ProblemDetails
-    Validate Json    ProblemDetails.schema.json    ${problemDetails}
+    Validate Json    ProblemDetails.schema.json    ${json}
     Log    Validation OK
 
 GET VNF Package Artifact - Negative (Unauthorized: Wrong Token)
@@ -77,9 +79,10 @@ GET VNF Package Artifact - Negative (Unauthorized: Wrong Token)
     Response Status Code Should Equal    401
     Log    Received 401 Unauthorized as expected
     ${problemDetails}=    Get Response Body
+    ${json}=    evaluate    json.loads('''${problemDetails}''')    json
     Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
     Log    Trying to validate ProblemDetails
-    Validate Json    ProblemDetails.schema.json    ${problemDetails}
+    Validate Json    ProblemDetails.schema.json    ${json}
     Log    Validation OK
 
 GET VNF Package Artifact - Negative (onboardingState issue)
@@ -90,9 +93,10 @@ GET VNF Package Artifact - Negative (onboardingState issue)
     Response Status Code Should Equal    409
     Log    Received 409 Conflict as expected
     ${problemDetails}=    Get Response Body
+    ${json}=    evaluate    json.loads('''${problemDetails}''')    json
     Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
     Log    Trying to validate ProblemDetails
-    Validate Json    ProblemDetails.schema.json    ${problemDetails}
+    Validate Json    ProblemDetails.schema.json    ${json}
     Log    Validation OK
 
 POST VNF Package Artifact - (Method not implemented)
@@ -103,11 +107,6 @@ POST VNF Package Artifact - (Method not implemented)
     POST    ${apiRoot}/${apiName}/${apiVersion}/vnf_packages/${vnfPkgId}/artifacts/{artifactPath}
     Response Status Code Should Equal    405
     Log    Received 405 Method not implemented as expected
-    #${problemDetails}=    Get Response Body
-    #Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
-    #Log    Trying to validate ProblemDetails
-    #Validate Json    ProblemDetails.schema.json    ${problemDetails}
-    #Log    Validation OK
 
 PUT VNF Package Artifact - (Method not implemented)
     Log    Trying to perform a PUT. This method should not be implemented
@@ -117,26 +116,15 @@ PUT VNF Package Artifact - (Method not implemented)
     PUT    ${apiRoot}/${apiName}/${apiVersion}/vnf_packages/${vnfPkgId}/artifacts/{artifactPath}
     Response Status Code Should Equal    405
     Log    Received 405 Method not implemented as expected
-    #${problemDetails}=    Get Response Body
-    #Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
-    #Log    Trying to validate ProblemDetails
-    #Validate Json    ProblemDetails.schema.json    ${problemDetails}
-    #Log    Validation OK
 
 PATCH VNF Package Artifact - (Method not implemented)
     Log    Trying to perform a PATCH. This method should not be implemented
     Create HTTP Context    ${NFVO_HOST}:${NFVO_PORT}    ${NFVO_SCHEMA}
     Set Request Header    Accept    ${ACCEPT_JSON}
     Run Keyword If    ${AUTH_USAGE} == 1    Set Request Header    Authorization    ${AUTHORIZATION}
-    Http Request    "PATCH"    ${apiRoot}/${apiName}/${apiVersion}/vnf_packages/${vnfPkgId}/artifacts/{artifactPath}
-    #PATCH    ${apiRoot}/${apiName}/${apiVersion}/vnf_packages/${vnfPkgId}/artifacts/{artifactPath}
+    Http Request    PATCH    ${apiRoot}/${apiName}/${apiVersion}/vnf_packages/${vnfPkgId}/artifacts/{artifactPath}
     Response Status Code Should Equal    405
     Log    Received 405 Method not implemented as expected
-    #${problemDetails}=    Get Response Body
-    #Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
-    #Log    Trying to validate ProblemDetails
-    #Validate Json    ProblemDetails.schema.json    ${problemDetails}
-    #Log    Validation OK
 
 DELETE VNF Package Artifact - (Method not implemented)
     Log    Trying to perform a DELETE. This method should not be implemented
@@ -146,8 +134,3 @@ DELETE VNF Package Artifact - (Method not implemented)
     DELETE    ${apiRoot}/${apiName}/${apiVersion}/vnf_packages/${vnfPkgId}/artifacts/{artifactPath}
     Response Status Code Should Equal    405
     Log    Received 405 Method not implemented as expected
-    #${problemDetails}=    Get Response Body
-    #Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
-    #Log    Trying to validate ProblemDetails
-    #Validate Json    ProblemDetails.schema.json    ${problemDetails}
-    #Log    Validation OK
diff --git a/SOL003/VNFPackageManagement-API_nxw/VNFPackageContent.robot b/SOL003/VNFPackageManagement-API_nxw/VNFPackageContent.robot
index 20d1294dd3a4e62505cd55fa1b6448d072597ccb..bcfbe3abe019e64ef9a06fdfaad63c89557f2eda 100644
--- a/SOL003/VNFPackageManagement-API_nxw/VNFPackageContent.robot
+++ b/SOL003/VNFPackageManagement-API_nxw/VNFPackageContent.robot
@@ -53,9 +53,10 @@ GET VNF Package Content - Negative Range
     Response Status Code Should Equal    416
     Log    Received 416 Range not satisfiable as expected.
     ${problemDetails}=    Get Response Body
+    ${json}=    evaluate    json.loads('''${problemDetails}''')    json
     Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
     Log    Trying to validate ProblemDetails
-    Validate Json    ProblemDetails.schema.json    ${problemDetails}
+    Validate Json    ProblemDetails.schema.json    ${json}
     Log    Validation OK
 
 GET VNF Package Content - Negative (Not Found)
@@ -67,9 +68,10 @@ GET VNF Package Content - Negative (Not Found)
     Response Status Code Should Equal    404
     Log    Received 404 Not Found as expected
     ${problemDetails}=    Get Response Body
+    ${json}=    evaluate    json.loads('''${problemDetails}''')    json
     Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
     Log    Trying to validate ProblemDetails
-    Validate Json    ProblemDetails.schema.json    ${problemDetails}
+    Validate Json    ProblemDetails.schema.json    ${json}
     Log    Validation OK
 
 GET VNF Package Content - Negative (Unauthorized: Wrong Token)
@@ -82,9 +84,10 @@ GET VNF Package Content - Negative (Unauthorized: Wrong Token)
     Response Status Code Should Equal    401
     Log    Received 401 Unauthorized as expected
     ${problemDetails}=    Get Response Body
+    ${json}=    evaluate    json.loads('''${problemDetails}''')    json
     Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
     Log    Trying to validate ProblemDetails
-    Validate Json    ProblemDetails.schema.json    ${problemDetails}
+    Validate Json    ProblemDetails.schema.json    ${json}
     Log    Validation OK
 
 GET VNF Package Content - Negative (onboardingState issue)
@@ -96,9 +99,10 @@ GET VNF Package Content - Negative (onboardingState issue)
     Response Status Code Should Equal    409
     Log    Received 409 Conflict as expected
     ${problemDetails}=    Get Response Body
+    ${json}=    evaluate    json.loads('''${problemDetails}''')    json
     Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
     Log    Trying to validate ProblemDetails
-    Validate Json    ProblemDetails.schema.json    ${problemDetails}
+    Validate Json    ProblemDetails.schema.json    ${json}
     Log    Validation OK
 
 POST VNF Package Content - (Method not implemented)
@@ -109,11 +113,6 @@ POST VNF Package Content - (Method not implemented)
     POST    ${apiRoot}/${apiName}/${apiVersion}/vnf_packages/${vnfPackageId}/package_content
     Response Status Code Should Equal    405
     Log    Received 405 Method not implemented as expected
-    #${problemDetails}=    Get Response Body
-    #Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
-    #Log    Trying to validate ProblemDetails
-    #Validate Json    ProblemDetails.schema.json    ${problemDetails}
-    #Log    Validation OK
 
 PUT VNF Package Content - (Method not implemented)
     Log    Trying to perform a PUT. This method should not be implemented
@@ -123,26 +122,15 @@ PUT VNF Package Content - (Method not implemented)
     PUT    ${apiRoot}/${apiName}/${apiVersion}/vnf_packages/${vnfPackageId}/package_content
     Response Status Code Should Equal    405
     Log    Received 405 Method not implemented as expected
-    #${problemDetails}=    Get Response Body
-    #Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
-    #Log    Trying to validate ProblemDetails
-    #Validate Json    ProblemDetails.schema.json    ${problemDetails}
-    #Log    Validation OK
 
 PATCH VNF Package Content - (Method not implemented)
     Log    Trying to perform a PATCH. This method should not be implemented
     Create HTTP Context    ${NFVO_HOST}:${NFVO_PORT}    ${NFVO_SCHEMA}
     Set Request Header    Accept    ${ACCEPT_JSON}
     Run Keyword If    ${AUTH_USAGE} == 1    Set Request Header    Authorization    ${AUTHORIZATION}
-    Http Request    "PATCH"    ${apiRoot}/${apiName}/${apiVersion}/vnf_packages/${vnfPackageId}/package_content
-    #PATCH    ${apiRoot}/${apiName}/${apiVersion}/vnf_packages/${vnfPackageId}/package_content
+    Http Request    PATCH    ${apiRoot}/${apiName}/${apiVersion}/vnf_packages/${vnfPackageId}/package_content
     Response Status Code Should Equal    405
     Log    Received 405 Method not implemented as expected
-    #${problemDetails}=    Get Response Body
-    #Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
-    #Log    Trying to validate ProblemDetails
-    #Validate Json    ProblemDetails.schema.json    ${problemDetails}
-    #Log    Validation OK
 
 DELETE VNF Package Content - (Method not implemented)
     Log    Trying to perform a DELETE. This method should not be implemented
@@ -152,8 +140,3 @@ DELETE VNF Package Content - (Method not implemented)
     DELETE    ${apiRoot}/${apiName}/${apiVersion}/vnf_packages/${vnfPackageId}/package_content
     Response Status Code Should Equal    405
     Log    Received 405 Method not implemented as expected
-    #${problemDetails}=    Get Response Body
-    #Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
-    #Log    Trying to validate ProblemDetails
-    #Validate Json    ProblemDetails.schema.json    ${problemDetails}
-    #Log    Validation OK
diff --git a/SOL003/VNFPackageManagement-API_nxw/VNFPackages.robot b/SOL003/VNFPackageManagement-API_nxw/VNFPackages.robot
index 2a5a467290607b41b2d82495c3bfd23c4c8eba20..ac2367e1ebef366b73ae0f4042490a17109bf755 100644
--- a/SOL003/VNFPackageManagement-API_nxw/VNFPackages.robot
+++ b/SOL003/VNFPackageManagement-API_nxw/VNFPackages.robot
@@ -13,10 +13,11 @@ GET all Packages
     Run Keyword If    ${AUTH_USAGE} == 1    Set Request Header    Authorization    ${AUTHORIZATION}
     GET    ${apiRoot}/${apiName}/${apiVersion}/vnf_packages
     Response Status Code Should Equal    200
-    ${vnfPkgInfos}=    Get Response Body
+    ${result}=    Get Response Body
+    ${json}=    evaluate    json.loads('''${result}''')    json
     Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
     Log    Trying to validate response
-    Validate Json    vnfPkgInfo.schema.json    ${vnfPkgInfos}
+    Validate Json    vnfPkgInfo.schema.json    ${json}
     Log    Validation OK
 
 GET all Packages - Filter
@@ -26,10 +27,11 @@ GET all Packages - Filter
     Run Keyword If    ${AUTH_USAGE} == 1    Set Request Header    Authorization    ${AUTHORIZATION}
     GET    ${apiRoot}/${apiName}/${apiVersion}/vnf_packages?${POS_FIELDS}
     Response Status Code Should Equal    200
-    ${vnfPkgInfos}=    Get Response Body
+    ${result}=    Get Response Body
+    ${json}=    evaluate    json.loads('''${result}''')    json
     Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
     Log    Trying to validate response
-    Validate Json    vnfPkgInfo.schema.json    ${vnfPkgInfos}
+    Validate Json    vnfPkgInfo.schema.json    ${json}
     Log    Validation OK
 
 GET all Packages - Negative (wronge filter name)
@@ -41,9 +43,10 @@ GET all Packages - Negative (wronge filter name)
     Response Status Code Should Equal    400
     Log    Received 400 Bad Request as expected
     ${problemDetails}=    Get Response Body
+    ${json}=    evaluate    json.loads('''${problemDetails}''')    json
     Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
     Log    Trying to validate ProblemDetails
-    Validate Json    ProblemDetails.schema.json    ${problemDetails}
+    Validate Json    ProblemDetails.schema.json    ${json}
     Log    Validation OK
 
 GET all Packages - Negative (Unauthorized: Wrong Token)
@@ -56,9 +59,10 @@ GET all Packages - Negative (Unauthorized: Wrong Token)
     Response Status Code Should Equal    401
     Log    Received 401 Unauthorized as expected
     ${problemDetails}=    Get Response Body
+    ${json}=    evaluate    json.loads('''${problemDetails}''')    json
     Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
     Log    Trying to validate ProblemDetails
-    Validate Json    ProblemDetails.schema.json    ${problemDetails}
+    Validate Json    ProblemDetails.schema.json    ${json}
     Log    Validation OK
 
 GET all Packages - Negative (Unauthorized: No Token)
@@ -71,9 +75,10 @@ GET all Packages - Negative (Unauthorized: No Token)
     Response Status Code Should Equal    401
     Log    Received 401 Unauthorized as expected
     ${problemDetails}=    Get Response Body
+    ${json}=    evaluate    json.loads('''${problemDetails}''')    json
     Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
     Log    Trying to validate ProblemDetails
-    Validate Json    ProblemDetails.schema.json    ${problemDetails}
+    Validate Json    ProblemDetails.schema.json    ${json}
     Log    Validation OK
 
 GET all Packages - all_fields
@@ -84,20 +89,21 @@ GET all Packages - all_fields
     GET    ${apiRoot}/${apiName}/${apiVersion}/vnf_packages?all_fields
     Response Status Code Should Equal    200
     ${vnfPkgInfos}=    Get Response Body
+    ${json}=    evaluate    json.loads('''${vnfPkgInfos}''')    json
     Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
     Log    Trying to validate response
-    Validate Json    vnfPkgInfo.schema.json    ${vnfPkgInfos}
+    Validate Json    vnfPkgInfo.schema.json    ${json}
     Log    Validation OK
     Log    Trying to validate softwareImages schema
-    ${softwareImages}=    Get Value From Json    ${vnfPkgInfos}    $..softwareImages
-    Validate Json    softwareImage.schema.json    ${softwareImages}
+    ${softwareImages}=    Get Value From Json    ${json}    $..softwareImages
+    Validate Json    softwareImage.schema.json    ${softwareImages[0]}
     Log    Validation for softwareImage schema OK
     Log    Trying to validate additionalArtifacts schema
-    ${additional_artifacts}=    Get Value From Json    ${vnfPkgInfos}    $..additionalArtifacts
-    Validate Json    additionalArtifacts.schema.json    ${additional_artifacts}
+    ${additional_artifacts}=    Get Value From Json    ${json}    $..additionalArtifacts
+    Validate Json    additionalArtifacts.schema.json    ${additional_artifacts[0]}
     Log    Validation for additionalArtifacts schema OK
-    ${links}=    Get Value From Json    ${vnfPkgInfos}    $.._links
-    Validate Json    links.schema.json    ${links}
+    ${links}=    Get Value From Json    ${json}    $.._links
+    Validate Json    links.schema.json    ${links[0]}
     Log    Validation for _links schema OK
 
 GET all Packages - fields
@@ -109,17 +115,18 @@ GET all Packages - fields
     GET    ${apiRoot}/${apiName}/${apiVersion}/vnf_packages?fields=${fields}
     Response Status Code Should Equal    200
     ${vnfPkgInfos}=    Get Response Body
+    ${json}=    evaluate    json.loads('''${vnfPkgInfos}''')    json
     Response Header Should Equal    Content-Type    ${CONTENT_TYPE_JSON}
     Log    Trying to validate response, checking vnfPkgInfo and other complex attributes included in the vnfPkgInfo
-    Validate Json    vnfPkgInfo.schema.json    ${vnfPkgInfos}
+    Validate Json    vnfPkgInfo.schema.json    ${json}
     Log    Validation for vnfPkgInfo OK
     Log    Trying to validate softwareImages schema
-    ${softwareImages}=    Get Value From Json    ${vnfPkgInfos}    $..softwareImages
-    Validate Json    softwareImage.schema.json    ${softwareImages}
+    ${softwareImages}=    Get Value From Json    ${json}    $..softwareImages
+    Validate Json    softwareImage.schema.json    ${softwareImages[0]}
     Log    Validation for softwareImage schema OK
     Log    Trying to validate additionalArtifacts schema
-    ${additional_artifacts}=    Get Value From Json    ${vnfPkgInfos}    $..additionalArtifacts
-    Validate Json    additionalArtifacts.schema.json    ${additional_artifacts}
+    ${additional_artifacts}=    Get Value From Json    ${json}    $..additionalArtifacts
+    Validate Json    additionalArtifacts.schema.json    ${additional_artifacts[0]}
     Log    Validation for additionalArtifacts schema OK
 
 GET all PACKAGE (Negative: Not found)