You mean ‘confd_delayed_reply_error’ here I assume?
Then in the ConfD configuration file confd.conf (from the man page):
/confdConfig/netconf/rpcErrors (close|inline) [close]
If rpcErrors is “inline”, and an error occurs during the processing of a or request when ConfD tries to fetch some data from a data provider, ConfD will generate an rpc-error element in the faulty element, and continue to process the next element.
If an error occurs and rpcErrors is “close”, the NETCONF transport is closed by ConfD.
If you set the above to “inline”, a ‘CONFD_DELAYED_RESPONSE’ followed by a ‘confd_delayed_reply_error’ with the message ‘MY ERROR STRING’ will look like this in the netconf.trace (the ConfD NETCONF trace log is enabled in confd.conf too):