# LicenseDefinition Class

Namespace: [PIX.QMSAPI.DataObjects](https://help.qlik.com/en-US/qlikview-developer/September2026/Subsystems/QMSAPIref/Content/PIX.QMSAPI.DataObjects.htm)  
Assembly: PIX.dll

Represents signed key license definition.

## Inheritance

* System.Object
  * LicenseDefinition

## Syntax

```
public class LicenseDefinition
```

## Constructors

| Name | Description |
| --- | --- |
| [LicenseDefinition()](https://help.qlik.com/en-US/qlikview-developer/September2026/Subsystems/QMSAPIref/Content/PIX.QMSAPI.DataObjects.LicenseDefinition.-ctor.htm#PIX_QMSAPI_DataObjects_LicenseDefinition__ctor) |  |

## Properties

| Name | Description |
| --- | --- |
| [Allotments](https://help.qlik.com/en-US/qlikview-developer/September2026/Subsystems/QMSAPIref/Content/PIX.QMSAPI.DataObjects.LicenseDefinition.Allotments.htm#PIX_QMSAPI_DataObjects_LicenseDefinition_Allotments) |  |
| [BlackListed](https://help.qlik.com/en-US/qlikview-developer/September2026/Subsystems/QMSAPIref/Content/PIX.QMSAPI.DataObjects.LicenseDefinition.BlackListed.htm#PIX_QMSAPI_DataObjects_LicenseDefinition_BlackListed) |  |
| [ErrorMessage](https://help.qlik.com/en-US/qlikview-developer/September2026/Subsystems/QMSAPIref/Content/PIX.QMSAPI.DataObjects.LicenseDefinition.ErrorMessage.htm#PIX_QMSAPI_DataObjects_LicenseDefinition_ErrorMessage) |  |
| [Features](https://help.qlik.com/en-US/qlikview-developer/September2026/Subsystems/QMSAPIref/Content/PIX.QMSAPI.DataObjects.LicenseDefinition.Features.htm#PIX_QMSAPI_DataObjects_LicenseDefinition_Features) |  |
| [LicenseNumber](https://help.qlik.com/en-US/qlikview-developer/September2026/Subsystems/QMSAPIref/Content/PIX.QMSAPI.DataObjects.LicenseDefinition.LicenseNumber.htm#PIX_QMSAPI_DataObjects_LicenseDefinition_LicenseNumber) |  |
| [UseSignedKey](https://help.qlik.com/en-US/qlikview-developer/September2026/Subsystems/QMSAPIref/Content/PIX.QMSAPI.DataObjects.LicenseDefinition.UseSignedKey.htm#PIX_QMSAPI_DataObjects_LicenseDefinition_UseSignedKey) |  |
| [Valid](https://help.qlik.com/en-US/qlikview-developer/September2026/Subsystems/QMSAPIref/Content/PIX.QMSAPI.DataObjects.LicenseDefinition.Valid.htm#PIX_QMSAPI_DataObjects_LicenseDefinition_Valid) |  |
| [ValidFrom](https://help.qlik.com/en-US/qlikview-developer/September2026/Subsystems/QMSAPIref/Content/PIX.QMSAPI.DataObjects.LicenseDefinition.ValidFrom.htm#PIX_QMSAPI_DataObjects_LicenseDefinition_ValidFrom) |  |
| [ValidTo](https://help.qlik.com/en-US/qlikview-developer/September2026/Subsystems/QMSAPIref/Content/PIX.QMSAPI.DataObjects.LicenseDefinition.ValidTo.htm#PIX_QMSAPI_DataObjects_LicenseDefinition_ValidTo) |  |

## Methods

| Name | Description |
| --- | --- |
| [Copy()](https://help.qlik.com/en-US/qlikview-developer/September2026/Subsystems/QMSAPIref/Content/PIX.QMSAPI.DataObjects.LicenseDefinition.Copy.htm#PIX_QMSAPI_DataObjects_LicenseDefinition_Copy) |  |

### Extension Methods

[ApiFilter.FilterFor<T>(T, Nullable<ApiVersion>)](https://help.qlik.com/en-US/qlikview-developer/September2026/Subsystems/QMSAPIref/Content/PIX.ApiFiltering.ApiFilter.FilterFor.htm#PIX_ApiFiltering_ApiFilter_FilterFor__1___0_System_Nullable_PIX_ApiVersion__)