XBEE3 PRO data payload transmission and data loss

I am using XBEE3 pro module, created 3 networks with different channels and PAN ID, each network contains around 2 to 4 router devices (XBEE3 PRO. I have configured legacy network by creating coordinator for each network and other as no sleep routers. Now when I broadcast any data payload from coordinator, sometimes my data frame gets dropped, not getting data from master to any one of the node, it is not frequent. It happens sometimes, majorly it happens for broadcasting communication. What could be the issue.