Suricata

It could be more user-friendly if we had a section in the User Guide that gave more details on the errors and warnings that Suricata lists.
Even with the code and the short summary, some of those messages are still obscure, and in some cases not even checking the source code makes things clearer. For instance:

[ERRCODE: SC_ERR_CONFLICTING_RULE_KEYWORDS(141)] - can’t set rule app proto to http: already set to http2

While this may be evident to someone who is used to Suricata, a newcomer may have a hard time figuring this one out.
If we had a section with the error codes and a human-friendly description, slightly more verbose and possibly even with examples on how to fix the error, that could be helpful and could potentially reduce some of the traffic in the forum related to such errors.