Deprecation notice: totalVariation aggregate for numeric time series

We’re deprecating the totalVariation aggregate function for numeric time series in Cognite Data Fusion, effective April 20, 2027. This follows Cognite’s 12-month deprecation policy for GA features: between now and that date the aggregate will continue to function as documented, and after it, requests that include totalVariation will return an error. The change applies to requests to the time series data list endpoint (/timeseries/data/list).

If your integrations rely on totalVariation, directly via the API, through an SDK, or in dashboards and derived pipelines, please review them before April 20, 2027 and migrate to another aggregate.

If totalVariation is important to a workflow in your organization and none of the alternative aggregates fit, reply to this thread or reach out to your Cognite representative. It helps us most if you can share:

• The use case and what the output drives (dashboard, alert, calculation, report).
• The time series volume and aggregation granularity involved.
• Whether computing the value client-side from raw data points is feasible for your setup.