Hi Dejan,

I confirm you that if a Subscription was initialized using an "Item Group" then it is not possible to extract the Item names from the update received by the client.

If the map "Item Group" -> "Item list" is static you can directly use the list at the time of subscription.
But, if it is dynamic, and therefore the intervention of the Metadata Adapter is required, a possible option to get the list of Item names, is to add a new Item (or a new field to an existing Item) which contains itself the list of names extracted from getItems().

Regards,
Giuseppe