[Yandex DataLens] Data source timed out

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Updated at June 2, 2026

ERR.DS_API.DB.SOURCE_ERROR.TIMEOUT

Query execution time exceeded for the data source.

Note

DataLens limits the query execution time on the source to 80 seconds.

To fix this error:

Optimize the data in the source.
Reduce the number of complex expressions with nested aggregations.
Reduce the number of fields in the dataset.
Create calculated fields at the dataset level instead of fields at the chart level.