Hi Hariprasad, I hope you're doing well!
This function can be used in different situations. It can help the coordinator determine the LQI value, or a specific device's role in the network, or the parent device for a node, device, type, and other information contained in the response's structure, as it contains the neighbor table.
This information can in turn be used for different purposes, and some additional processing of this response can be programmed, depending on the desired application.
More information about this function can be found in the ZigBee 3.0 Stack User Guide.
Please let me know if you need any more information.
Best regards,
Sebastian