Dfyjkt

I am trying to add a new custom attribute to VM ware vSphere using VMware JAVA SDK but it is throwing "InvalidType" exception.

com.vmware.vim25.InvalidType
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
at com.vmware.vim25.ws.XmlGen.fromXml(XmlGen.java:205)
at com.vmware.vim25.ws.XmlGen.parseSoapFault(XmlGen.java:82)
at com.vmware.vim25.ws.WSClient.invoke(WSClient.java:134)
at com.vmware.vim25.ws.VimStub.addCustomFieldDef(VimStub.java:284)
at com.vmware.vim25.mo.CustomFieldsManager.addCustomFieldDef(CustomFieldsManager.java:57)
at vmwaretest.Connect.setSelectedVM(Connect.java:85)
at vmwaretest.Connect.main(Connect.java:29)

Code

ServiceInstance si = null;
 try 
 si = Initialisation(url, user, password);
 catch (RemoteException e) 

 e.printStackTrace();
 catch (MalformedURLException e) 

 e.printStackTrace();
 

 ServerConnection serverConnection = si.getServerConnection();
 ManagedObjectReference mor = si.getMOR();

 CustomFieldsManager cfm = new CustomFieldsManager(serverConnection, mor);
 try 
 cfm.addCustomFieldDef("type", null, null, null);
 catch (DuplicateName e) 
 e.printStackTrace();
 catch (InvalidPrivilege e) 
 e.printStackTrace();
 catch (RuntimeFault e) 
 e.printStackTrace();
 catch (RemoteException e) 
 e.printStackTrace();
 

Connection to the vSphere is working fine as I am able to retrieve or change the already existing Custom attributes but not able to create a new one.

What is wrong with the above code? Or is there any other way to add new custom attribute using vmware Java SDK.

CustomFieldsManager doc https://pubs.vmware.com/vsphere-6-5/index.jsp?topic=%2Fcom.vmware.wssdk.pg.doc%2FPG_Appx_Privileges_Reference.23.2.html