Methods and apparatuses are disclosed for exposure of monitoring event. According to an embodiment, a network exposure node receives a first request for subscribing to a plurality of monitoring reports for each of a group of terminal devices which include one or more terminal devices having both globally valid identifiers (IDs) and locally valid IDs. The network exposure node obtains, from a subscriber management node, the globally valid IDs and the locally valid IDs of the one or more terminal devices and a correspondence between the globally valid IDs and the locally valid IDs. In response to receiving from a mobility management node a monitoring report for a terminal device in the group of terminal devices, the network exposure node determines, for the terminal device, a current remaining number of monitoring reports based on the obtained IDs and correspondence.