Hello @SGupt.13 and welcome to Community :) ;
I advise you to get inspired from the Nx_SNTP_Client example available in x-cube-azrtos-h7 package.
This example developed with STM32H747I-DISCO board.
But, you can configurated your project with Nucleo-H723ZG by following the instructions "How to develop a NetX SNTP client and connect with an STNP server to get a time update" in the readme file.
I hope this help you!
Kaouthar
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