# Extended review

> [!NOTE]
> **Note:** User experience mocks are for illustrative purposes only and are subject to change.

> [!NOTE]
> **Note:** This flow is applicable only for Wallet-initiated flows.

In some cases, the evidence provided during the original proofing request may
not be sufficient to confirm the identity of the user. In these cases,
a challenge can be submitted to the user to provide additional information
before an approval status is determined.

Issuers have a few options for how to challenge the user.
- **Option 1: Additional Time Required**   

  Issuer needs more time to review the evidence.
  ![Issuer needs more time to review the evidence.](https://developers.google.com/static/wallet/identity/provisioning/overview/images/provisioning-challenge.png)
- **Option 2: Verification Letter**   

  User should follow the instructions in the letter sent by the issuer.
  ![User should follow the instructions in the letter sent by the issuer.](https://developers.google.com/static/wallet/identity/provisioning/overview/images/provisioning-challenge-letter.png)
- **Option 3: Website Challenge**   

  User should complete a challenge on the Issuer's website.
  ![User should complete a challenge on the Issuer's website.](https://developers.google.com/static/wallet/identity/provisioning/overview/images/provisioning-challenge-online.png)

After the user takes the appropriate action, they will receive a notification
when their VDC is approved, and instructions
on how to present their VDC to relying parties.
- **Request Approved**   

  The VDC request has been approved.
  ![The VDC application has been approved.](https://developers.google.com/static/wallet/identity/provisioning/overview/images/successful-provisioning/mDL-Green-Path-32.png)
- **Learn More**   

  A prompt to learn more about using the new VDC.
  ![A prompt to learn more about using the new VDC.](https://developers.google.com/static/wallet/identity/provisioning/overview/images/wallet-initiated-issuer-proofed/Wallet-start-12.png)