# NotificationUserInput
The **NotificationUserInput** module provides APIs for defining the notification user input.
> **NOTE** > > The initial APIs of this module are supported since API version 8. Newly added APIs will be marked with a superscript to indicate their earliest API version.
## NotificationUserInput
**System capability**: SystemCapability.Notification.Notification
| Name | Type | Mandatory| Description | | -------- | ------ | ---- | ----------------------------- | | inputKey | string | Yes | Key to identify the user input.|