> For the complete documentation index, see [llms.txt](https://legacy-docs.usesmileid.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://legacy-docs.usesmileid.com/further-reading/faqs/how-to-re-enroll-or-delete-a-user.md).

# How to re-enroll or delete a user?

This page explains how to manage users in our system, covering:

1. Re-enrollment
2. Permanent deletion

The unique `user_id` sent with each job is central to these operations.

## Overview

1. Re-enroll: Allows an existing user to submit a new enrollment job i.e. [Biometric KYC](/products/for-individuals-kyc/biometric-kyc.md), [Document Verification](/products/for-individuals-kyc/document-verification/document-verification.md), [Enhanced Document Verification](/products/for-individuals-kyc/document-verification/enhanced-document-verification.md) , [SmartSelfie™ Registration](/products/for-individuals-kyc/biometric-authentication.md#register-a-user).
2. Delete: Permanently removes a `user_id` and all enrolment information (this cannot be undone).

{% hint style="info" %}
Use the same endpoint with different flags to manage each type of action.
{% endhint %}

### Endpoint

POST `{{base_url}}/v2/block-user`

* Sandbox base url: <https://testapi.smileidentity.com>
* Prod base url: <https://api.smileidentity.com>

### Request Header

<table><thead><tr><th>Key</th><th>Value</th><th width="115.53125">Required</th><th>Description</th></tr></thead><tbody><tr><td>smileid-partner-id</td><td>{{your_partner_id eg. 0001}}</td><td>Yes</td><td>This is your partner id which can be found on the side navigation panel of the <a href="https://portal.usesmileid.com/partner/dashboard">Smile ID partner portal</a></td></tr><tr><td>smileid-request-signature</td><td>{{your_security_signature eg. aw234..}}</td><td>Yes</td><td>Your calculated access signature</td></tr><tr><td>smileid-timestamp</td><td>{{timestamp eg. 2021-08-12T17:57:00.614879}}</td><td>Yes</td><td>The timestamp that was used to calculate your signature (in ISO date/time format).</td></tr></tbody></table>

{% hint style="info" %}
To prevent issues with authorisation errors, the timestamp must be in [ISO 8601](https://en.wikipedia.org/wiki/ISO_8601) with a micro-second format of 3-digits. eg. `.809Z` for this timestamp: `2025-05-23T11:40:07.809Z`.
{% endhint %}

### Request Body

#### Re-enroll a User ID

To re-enroll a user (i.e., allow them to submit a new enrollment job under the same `user_id`):

```json
{
  "allow_new_enroll": true,
  "user_id": "<User ID>"
}
```

* `allow_new_enroll`: Set to `true` to enable enrollment for an existing user.

#### Delete or Permanently Block a User ID

{% hint style="danger" %}
Deleting a user is **permanent** and cannot be **reversed**. Whenever possible, we recommend **re-enrolling** users instead of deleting them.

**Once deleted, the `user_id` cannot be reused.**
{% endhint %}

```json
{
  "deleted": true,
  "user_id": "<User ID>"
}
```

* `deleted`: Set to `true` to permanently remove user data.


---

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