This discussion refers only to ACTION-CONFIRMED. ACTION is a multi-function operation. The ACTION request is requesting the target object to do one of a set of possible functions. The particular function being requested is specified by the detailed actionType data contained in the request. The VTAM topology agent supports only one type of action, ACTION(snapshot). The ACTION(snapshot). operation is a request directed to one of a set of special objects, requesting the return of a set of topology data. The type and amount of data returned varies, depending upon the class of object that is the target of the request.