Operation Status Object could be returned from persistence layer.

OperationStatus

[DebuggerDisplay("Status: {Status}")]
  public class OperationStatus
	{
		public bool Status { get; set; }
		public int RecordsAffected { get; set; }
		public string Message { get; set; }
		public Object OperationId { get; set; }

		//Store simple string for exception message to avoid any possible serialization issues
		public string ExceptionMessage { get; set; }
		public string ExceptionStackTrace { get; set; }
		public string ExceptionInnerMessage { get; set; }
		public string ExceptionInnerStackTrace { get; set; }

		public static OperationStatus CreateFromException(string message, Exception exception)
		{
			var opStatus = new OperationStatus
			{
				Status = false,
				Message = message,
				OperationId = null
			};

			if (exception != null)
			{
				opStatus.ExceptionMessage = exception.Message;
				opStatus.ExceptionStackTrace = exception.StackTrace;
				opStatus.ExceptionInnerMessage = (exception.InnerException != null) ? exception.InnerException.Message : null;
				opStatus.ExceptionInnerStackTrace = (exception.InnerException != null) ? exception.InnerException.StackTrace : null;
			}
			return opStatus;
		}
	}