One way to improve conversion--and to protect your users--is to limit the [authorization scope](https://developers.google.com/apps-script/concepts/scopes) of access to only the services and content that are required for your script to run. For users outside your organization, sufficiently limiting the scope will eliminate the unverified app warning from Google.
To restrict access to only the current document, you can add this comment at the top of the script (i.e., the `Code.gs` file).
```javascript
/**
* @OnlyCurrentDoc
*/
```
For more control over the authentication scopes, first expose the [script manifest](https://developers.google.com/apps-script/concepts/manifests) (Settings > Check *Show "appsscript.json" manifest in file editor*) and then update the file by adding an `oauthScopes` property with a list of scopes.
> [!warning]
> Your script may fail silently if you try to run an unauthorized action from the user interface (e.g., not from the script editor).
In the example below, the scope is restricted to only the current file.
```json
{
"timeZone": "America/Denver",
"dependencies": {
},
"exceptionLogging": "STACKDRIVER",
"runtimeVersion": "V8",
"oauthScopes": [
"https://www.googleapis.com/auth/drive.file"
]
}
```
A list of all authorization scopes can be found [here](https://developers.google.com/identity/protocols/oauth2/scopes). The table below describes a few common scopes for the Google Drive, Docs and Sheets.
| Scopes | |
| ---------------------------------------------------------- | ---------------------------------------------------------------------------------------- |
| `https://www.googleapis.com/auth/drive` | See, edit, create, and delete all of your Google Drive files |
| `https://www.googleapis.com/auth/drive.file` | See, edit, create, and delete only the specific Google Drive files you use with this app |
| `https://www.googleapis.com/auth/drive.metadata.readonly` | See information about your Google Drive files |
| `https://www.googleapis.com/auth/drive.readonly` | See and download all your Google Drive files |
| `https://www.googleapis.com/auth/spreadsheets` | See, edit, create, and delete all your Google Sheets spreadsheets |
| `https://www.googleapis.com/auth/spreadsheets.readonly` | See all your Google Sheets spreadsheets |
| `https://www.googleapis.com/auth/documents` | See, edit, create, and delete all your Google Docs documents |
| `https://www.googleapis.com/auth/documents.readonly` | See all your Google Docs documents |
| `https://www.googleapis.com/auth/script.container.ui` | Show modal dialog boxes |
| `https://www.googleapis.com/auth/spreadsheets.currentonly` | Allow `Spreadsheet.getActiveSpreadsheet()` |