Retries in xbee api mode

Hello I have a project that has 3 arduino and xbee (one coordinator and two router device) so I can send data to anothwr arduino and its fine. But I have a question. If I concfigure xbee to retry 3 time when it doesnt recieve a ack, what happpen after thrid retry and xbee dont recieve ack? Because I will sent files and I want to know when xbee try for the last time and tell arduino timeout and send another file? Is thre posible to get that information from xbee in oder to arduino send second file?

Hi, anyone can help me?