Abstract: An apparatus, method, computer program product and system are provided for initiating a request for acknowledgment of successfully, or unsuccessfully, transmitted data packets, wherein the request is initiated in response to the detection of a potential overload situation or an upcoming resource limitation. In particular, a transmitter may monitor certain resources associated with the transmitter, such as memory consumption or processing capacity, and automatically request that a receiver transmit an acknowledgement when a potential overload of one or more of the resources is detected. This may occur, for example, when it is determined that memory consumption has exceeded a predefined threshold or that the processing capacity has been substantially exhausted, to name a few.