Hi @Nagendra,
You had asked this question in a different thread. You were suggested to use the overlay.ip_dict to get the IP available in your design. DPU PYNQ on ZCU104 and ZCU111 - #20 by Nagendra
The error is very clear, memory is not an IP in your design. Use overlay.ip_dict.keys() to only show the name of the IP available in your design.
Mario