# Webhook \['fireblocks-signature'\] issue (sandbox)
**URL:** https://community.fireblocks.com/t/webhook-fireblocks-signature-issue-sandbox/1040
**Category:** Developer Discussion
**Created:** [May 15, 2024, 8:20pm UTC](https://community.fireblocks.com/t/webhook-fireblocks-signature-issue-sandbox/1040 "2024-05-15T20:20:53Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Vyacheslav](https://community.fireblocks.com/u/Vyacheslav)
#### Post date: [May 15, 2024, 8:20pm UTC](https://community.fireblocks.com/t/webhook-fireblocks-signature-issue-sandbox/1040/1 "2024-05-15T20:20:53Z")
Hello!
We have an issue that we don’t receive [‘fireblocks-signature’] in headers as said in documentation to verify signature. But we receive hash secret key in “x-webhook-secret”.
It’s sandbox mode
So we are confused is it some recent updates were made or just some bug or something else? Our webhook url - [https://61notzk3y0.execute-api.eu-central-1.amazonaws.com/process-transactions](https://61notzk3y0.execute-api.eu-central-1.amazonaws.com/process-transactions)
Also we have different payload compated to documentation.
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### Author:  [@Wilfred](https://community.fireblocks.com/u/Wilfred)
#### Post date: [May 16, 2024, 5:13am UTC](https://community.fireblocks.com/t/webhook-fireblocks-signature-issue-sandbox/1040/2 "2024-05-16T05:13:14Z")
Hi @Vyacheslav can you confirm if you’ve configured the webhook URL under the “Settings \> General tab \> Webhooks” section?
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### Author:  [@Vyacheslav](https://community.fireblocks.com/u/Vyacheslav)
#### Post date: [May 16, 2024, 9:33am UTC](https://community.fireblocks.com/t/webhook-fireblocks-signature-issue-sandbox/1040/3 "2024-05-16T09:33:01Z")
You are right, I was using notifications. Thanks for help. Problem is solved