When you try plotting on a graph Splunk metric split by a dimension with the same name (as the metric itself) will show NULL instead of the dimension.
![](https://isbyr.com/wp-content/uploads/2022/10/splunk_metric_by_dimension_original-1024x300.png)
When you try plotting on a graph Splunk metric split by a dimension with the same name (as the metric itself) will show NULL instead of the dimension.