---
title: "Refresh a User's Authentication Token without the Validic User ID"
canonical: "https://help.validic.com/space/VCS/1635418242/Refresh%20a%20User's%20Authentication%20Token%20without%20the%20Validic%20User%20ID"
format: markdown
---
###### **This article pertains to:** [Legacy API (V1)] 

---

***If I have lost my user's Validic ID and only kept the user's unique identification when I provisioned it to Validic, can I still refresh my user's authentication token or user's access token?***

Yes. Using several Validic API calls, you are able to refresh a user's authentication token even if you only have your user's UID as a reference. The first problem you need to solve is getting your user's Validic User ID. Please refer to the article [Retrieving a Mapping of Validic User IDs with UIDs](https://validic.force.com/support/s/article/retrieving-a-mapping-of-validic-user-ids-with-uids1?r=3&ui-force-components-controllers-recordGlobalValueProvider.RecordGvp.getRecord=1) to do this.

The response will only include the user's Validic User ID, but that will enable you to retrieve a new User Authentication Token for your user with the refresh_token.json API call:

```
GET https://api.validic.com/v1/organizations/{ORGANIZATION_ID}/users/{UID}/refresh_token.json?access_token={ACCESS_TOKEN}

{
    "code": 200,
    "message": "Ok",
    "user": {
        "id_": "{VALIDIC_USER_ID}",
        "uid": "{UID}",
        "authentication_token": "{AUTH_TOKEN}"
    }
}
```

This new authentication_token will replace the user's previously assigned token.