Hi Tanja,
while the ATP_CHECK is a model attribute in the context node BTADMINI of view BT116IT_SRVO/ServicePartItem it is not provided by the BOL-model. If you check the GET_ATP_CHECK method you'll notice, that the return icon is created by calling some auxiliary method.
So in order to get the same functionality in the second view simply create a mode node and change the different methods of the node afterwards. Unfortunately you most likely won't get around duplicating the code of the GET_ATP_CHECK method.
Christian