title: EWS operation to edit Distribution list
body: <p>I am looking for an EWS operation to edit a Distribution list. Here edit means, adding\deleting a existing contact into\from an existing group or changing Display Name of Group.</p>
  
  <p>I have tried option like mentioned in following link:- <a href="https://social.msdn.microsoft.com/Forums/office/en-US/db110c4e-a0f2-40de-9276-3e30458b254f/ews-maximum-number-of-members-in-a-contact-group?forum=exchangesvrdevelopment" rel="nofollow">https://social.msdn.microsoft.com/Forums/office/en-US/db110c4e-a0f2-40de-9276-3e30458b254f/ews-maximum-number-of-members-in-a-contact-group?forum=exchangesvrdevelopment</a> </p>
  
  <p>Also used properties like AppendToItemField, SetItemField and DeleteItemField?But error comes as "The method or operation is not implemented"</p>