Resolved issue #63:

https://forge.etsi.org/gitlab/nfv/api-tests/issues/63

SOL005/NSLifecycleManagement-API/NSLCMOperationKeywords.robot

@@ -126,7 +126,7 @@ Check resource existance
 Check HTTP Response Status Code Is
     [Arguments]    ${expected_status}
     Log    Validate Status code    
-    Should Be Equal    ${response[0]['status']}    ${expected_status}
+    Should Be Equal as Strings  ${response[0]['status']}    ${expected_status}
     Log    Status code validated 
     
 Check HTTP Response Header Contains