Max length of KPI Base Search metric title in ITSI

[ewan000]

I created some base searches with the API with very long metric names derived from statsd metrics.

When I attempted to add these KPIs to a service via the UI I discovered that although the drop-down of the metrics from the base search populates and allows you select one. when you click 'next' you get an error "Metric field is required"

I attempted to edit the KPI base search with the UI to shorten the metric name, but although no error is thrown the UI will ignore the change.

I added a new metric with the name "test" and was able to select and proceed with adding this KPI to a service.

The documentation* doesn't seem to have a schema for the metric array and what information it has doesnt mention any max lengths of fields that i can see.

Is there a max length that I have exceeded, or is it something else about the way I have created the KPI base search?

*https://docs.splunk.com/Documentation/ITSI/4.4.1/RESTAPI/ITSIRESTAPIschema

[ewan000 · Accepted solution]

I found that this is caused by not filling in the _key field on each metric