Enabling %ETN Logging Enabling %ETN Logging The Event Log automatically includes partial information about system-level exceptions (including exceptions in your code). These Event Log entries end as follows by default: -- logged as '-' number - @' quit arg1/arg2 }' To get more complete information about such errors: Set the ^Ens.Debug("LogETN") global node to any value. This causes InterSystems IRIS to record additional details for system-level exceptions. Rerun the code that you think caused the exception (for example, resend messages). Recheck the Event Log, which now contains entries that end as follows: -- logged as '25 Sep 2012' number 15 @' quit arg1/arg2 }' This information refers to an entry in the Application Error Log — specifically it refers to error 15 in the Application Error Log for 25 September 2012. Then to examine these exceptions, you can either: Select System Operation > System Logs > Application Error Log. Use the ^%ERN routine. For details, see Other Debugging Tools.