# OpcObjectTypes.OpcServer.OpcCapabilities Members

> Reference: Represents the identifier of the ServerType_ServerCapabilities object and provides the identifiers of the nodes related to it.

<dl class="api-definition">
<dt>Type</dt>
<dd><a href="./">OpcObjectTypes.OpcServer.OpcCapabilities</a></dd>
<dt>Namespace</dt>
<dd><a href="../namespaces/opc.uafx">Opc.UaFx</a></dd>
<dt>Assembly</dt>
<dd>Opc.UaFx.Advanced.dll</dd>
<dt>Package</dt>
<dd>Opc.UaFx.Advanced v2.59.0</dd>
<dt>Also in</dt>
<dd>Opc.UaFx.Client</dd>
</dl>

Inherits members from [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members).

## Properties

### AggregateFunctions

Gets the identifier of the Server\_ServerCapabilities\_AggregateFunctions object.

<div class="api-signature" data-lang="csharp">

```csharp
public OpcNodeId AggregateFunctions { get; }
```

</div>

<div class="api-signature" data-lang="vbnet">

```vbnet
Public ReadOnly Property AggregateFunctions As OpcNodeId
```

</div>

**Property value**

[OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/)

An [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) of the OPC UA namespace.

### ModellingRules

Gets the identifier of the Server\_ServerCapabilities\_ModellingRules object.

<div class="api-signature" data-lang="csharp">

```csharp
public OpcNodeId ModellingRules { get; }
```

</div>

<div class="api-signature" data-lang="vbnet">

```vbnet
Public ReadOnly Property ModellingRules As OpcNodeId
```

</div>

**Property value**

[OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/)

An [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) of the OPC UA namespace.