---
title: "system.opchda.getAggregates"
description: "Will query the server for aggregates that it supports."
---

# system.opchda.getAggregates

> Will query the server for aggregates that it supports.

This function is used in **Python Scripting**.

## Description
## Client Permission Restrictions
This scripting function has no [Client Permission](projects\project-properties\project-properties.md#client---permissions) restrictions.

## Syntax
`system.opchda.getAggregates(serverName)`

### Parameters

|Type|Parameter|Description|
|--|--|--|
|String| `serverName` |The name of the defined OPC-HDA server to query.|
### Returns
**Aggregates[]** - A list of supported Aggregate objects. Each object has `id`, `name`, and `desc` properties defined.
### Scope
All