# ClearOneAndOnlyOne Property

## Overloads

| [ClearOneAndOnlyOne](https://help.qlik.com/en-US/qlikview-developer/September2026/Subsystems/QMSAPIref/Content/PIX.QMSAPI.DataObjects.QDSDocumentSessionConfiguration.ClearOneAndOnlyOne.htm#PIX_QMSAPI_DataObjects_QDSDocumentSessionConfiguration_ClearOneAndOnlyOne) |  | Value indicating if the "Always one selected value" should be cleared in the QlikView document.<br>If set to false can cause data reduction problems. |
| --- | --- | --- |

[](https://help.qlik.com/en-US/qlikview-developer/Subsystems/QMSAPIref/Content/PIX.QMSAPI.DataObjects.QDSDocumentSessionConfiguration.ClearOneAndOnlyOne.htm) [](https://help.qlik.com/en-US/qlikview-developer/Subsystems/QMSAPIref/Content/PIX.QMSAPI.DataObjects.QDSDocumentSessionConfiguration.ClearOneAndOnlyOne.htm)

## ClearOneAndOnlyOne

Value indicating if the "Always one selected value" should be cleared in the QlikView document. If set to false can cause data reduction problems.

### Declaration

```

          public bool ClearOneAndOnlyOne { get; set; }
    
  
```

### Property Value

| Type | Description |
| --- | --- |
| System.Boolean |  |