1# NotificationSorting (System API)
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3The **NotificationSorting** module provides APIs for defining the sorting information of active notifications.
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5> **NOTE**
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7> The initial APIs of this module are supported since API version 7. Newly added APIs will be marked with a superscript to indicate their earliest API version.
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9> The APIs provided by this module are system APIs.
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11## Attributes
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13**System capability**: SystemCapability.Notification.Notification
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15**System API**: This is a system API and cannot be called by third-party applications.
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17| Name     | Type             | Read Only  | Optional| Description                    |
18|-----------| ---------------- | -------|----- |-------------------------|
19| slot        | [NotificationSlot](js-apis-inner-notification-notificationSlot.md) | Yes| No| Notification slot type.                 |
20| ranking     | number                                                             | Yes| No| Notification level. If this parameter is not set, the default value is used based on the notification slot type.|
21| hashCode    | string                                                             | Yes| No| Unique ID of the notification.               |
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