Deprecate failureReason column of JSON query log.

Author: Lojjs

modules/ROOT/pages/changes-deprecations-removals.adoc

@@ -57,6 +57,9 @@ It is highly recommended to keep it enabled and not to alter it. +
 If you require the _debug.log_ messages in a different format, create an additional Appender since the Neo4j Support team uses the default one.
 For more information, see xref:monitoring/logging.adoc#_default_logging_configuration[Default logging configuration].
 
+Starting from 2025.05, the `failureReason` column of the JSON format query log is deprecated.
+Instead, use the `errorInfo` column.
+
 === Built-in procedures
 
 .See procedures removed in Neo4j 2025.01 without replacement.

modules/ROOT/pages/monitoring/logging.adoc

@@ -1285,9 +1285,11 @@ Included when xref:configuration/configuration-settings.adoc#config_db.logs.quer
 | annotationData
 | Metadata attached to the transaction.
 
+[role=label--deprecated-2025.05]
 | failureReason
 | Reason for failure.
 Included when applicable.
+This field is deprecated by `errorInfo`.
 
 | errorInfo
 | GQL error information as a JSON object.