# VAULT\_BALANCE\_UPDATE (V2 - Webhook)

**URL:** <https://community.fireblocks.com/t/vault-balance-update-v2-webhook/3006>\
**Category:** Support\
**Created:** [November 3, 2025, 1:47pm UTC](https://community.fireblocks.com/t/vault-balance-update-v2-webhook/3006 "2025-11-03T13:47:17Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![mkara](https://avatars.discourse-cdn.com/v4/letter/m/e47c2d/32.png) [@mkara](https://community.fireblocks.com/u/mkara)\
**Post date:** [November 3, 2025, 1:47pm UTC](https://community.fireblocks.com/t/vault-balance-update-v2-webhook/3006/1 "2025-11-03T13:47:17Z")

</div>

I’ve joined the Early Access Program to use the **Refresh Vault Asset Balance V2 Webhook (VAULT\_BALANCE\_UPDATE)**. However, I haven’t been able to find any official documentation on how to use the Early Access features.

I’m trying to test it, but I keep getting a **401 Unauthorized** error. I’ve already added the Webhook V2 URL under **Settings \> General** , and I’m currently using Webhook V1 successfully.

Could you please help me understand how to properly use and test the **V2 webhook** for `VAULT_BALANCE_UPDATE`?