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canonical: ru/troubleshooting/errors/ERR-DS_API-FORMULA-VALIDATION-WIN_FUNC-NO_AGG.html
title: Ошибка DataLens On-premises ERR.DS_API.FORMULA.VALIDATION.WIN_FUNC.NO_AGG
description: >-
  На странице приведено описание ошибки DataLens On-premises Window function has
  no aggregated expressions among its arguments.
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---

# [DataLens On-premises] Window function has no aggregated expressions among its arguments

`ERR.DS_API.FORMULA.VALIDATION.WIN_FUNC.NO_AGG`

Среди аргументов [оконной функции](../..//function-ref/window-functions.md) обязательно должно быть [агрегированное выражение](../../concepts/aggregation-tutorial.md#datalens-aggregation) (оконные функции обязаны принимать показатели в качестве аргументов).