IEC104 Error (Unadvising id)

IEC104 Error (Unadvising id)

Hi ,
I have been working to send data through IEC104 i have added variable along with their CAOA and IOA addresses and the connection has been made on the other(master) side as well but the values are not showing up and its showing the following error/massage



with respect to the particular IOA i am trying to get at the master side .
Anyone can help why dose it showing up
Thanks in advance

This is a migrated post! Originally posted on 25.04.2022 by user Huzaifah. Please be aware that information can be outdated.