---
url: /process-functions/security-applicationtagexists.md
description: Checks whether a tag exists on an application.
---

# security.applicationTagExists

Checks whether a tag exists on an application. Returns a boolean value.

```js
security.applicationTagExists(applicationId, tag)
```

#### Parameters

* `applicationId` - Identifier of the activity.
* `tag` - Tag to be checked in the activity.

#### Example

```js
let boolean = security.applicationTagExists("MyActivityId", "Tag");
```