Hello,

Syslog-ng does not always put the sequenceId into SDATA, for example logs from a local file will have a seqnum and when forwarded it will have this SDATA field.
More info about this can be found under SEQNUM macro in our admin guide:
https://www.syslog-ng.com/technical-documents/doc/syslog-ng-open-source-edition/3.24/administration-guide/63#TOPIC-1298112

Well, I don't know a quick solution (e.g. a config option to disable this), I'll try to help you.

Can you share your configuration, please?

Regards,
Gabor

From: syslog-ng <syslog-ng-bounces@lists.balabit.hu> on behalf of Debjyoti Mukherjee <debmukhra@gmail.com>
Sent: Tuesday, November 26, 2019 16:17
To: syslog-ng@lists.balabit.hu <syslog-ng@lists.balabit.hu>
Subject: [syslog-ng] Structure data set to "-"

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Hello

Trying to send logs to remote syslog server in RFC 5424 format. The STRUCTURE_DATA should be set to "-".

What is the way to the this value to "-"

Currently it is coming as [meta sequenceId="21"]. I am using Openwrt and the syslog version is 3.24

Thank you