EXM Delivery Cloudを使用した場合、バウンス統計が収集されないことがあります。この問題は、EXM Delivery Cloudがバウンス メッセージから誤ったプロパティを読み取ることにより、コンタクトの解析に失敗するために発生します。このため、レポートではバウンス値が0%になり、ログには以下のエラーが出力されます：
23408 16:13:09 ERROR Bounce processing failed Exception: System.AggregateException Message: One or more errors occurred. Source: mscorlib at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions) at System.Threading.Tasks.Task.Wait(Int32 millisecondsTimeout, CancellationToken cancellationToken) at Sitecore.EDS.Providers.SparkPost.Tasks.BouncesTaskProcessor.HandleMessageEvents(CancellationToken cancellationToken, List`1 messageEventResponses) at Sitecore.EDS.Providers.SparkPost.Tasks.BaseTaskProcessor.OnProcess(ShortRunningTask task, CancellationToken cancellationToken) Nested Exception Exception: System.ArgumentNullException Message: value should not be null. Parameter name: value Source: Sitecore.Framework.Conditions at Sitecore.Framework.Conditions.RequiresValidator`1.ThrowExceptionCore(String condition, String additionalMessage, ConstraintViolationType type) at Sitecore.Framework.Conditions.Throw.ValueShouldNotBeNull[T](ConditionValidator`1 validator, String conditionDescription) at Sitecore.Framework.Conditions.ValidatorExtensions.IsNotNull[T](ConditionValidator`1 validator) at Sitecore.Modules.EmailCampaign.Core.Contacts.ContactIdentifierExtensions.ToContactIdentifier(String value) at Sitecore.EmailCampaign.Cm.Handlers.BouncedMessageHandler.HandleReportedMessages(ICollection`1 bouncedMessages) at Sitecore.EDS.Core.Reporting.DeliveryReportProvider`1.<HandleMessages>d__8.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Sitecore.EDS.Core.Reporting.DeliveryReportProvider`1.<HandleReportedMessages>d__7.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Sitecore.EDS.Core.Reporting.BounceManager.<HandleBouncedMessages>d__6.MoveNext()
この問題を解決するには、以下のいずれかの方法をお試しください：