[Yandex Cloud documentation](../../../../../index.md) > [Yandex Serverless Integrations](../../../../index.md) > [Concepts](../../../index.md) > Workflows > [YaWL specification](../index.md) > Integration steps > FunctionCall

# FunctionCall

Invoking the [Yandex Cloud Functions](../../../../../functions/index.md) function.

Field name | Type | Required | Default value | [Templating](../../templating.md) is supported | Description
--- | --- | --- | --- | --- | ---
`functionId` | `string` | Yes | No | No | Function ID.