# Webhook URL not accepted

**URL:** <https://community.hubspot.com/t/webhook-url-not-accepted/47508>\
**Category:** APIs & Integrations\
**Tags:** webhooks\
**Created:** [November 24, 2021, 3:08pm UTC](https://community.hubspot.com/t/webhook-url-not-accepted/47508 "2021-11-24T15:08:07Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![GBulleri](https://avatars.discourse-cdn.com/v4/letter/g/898d66/32.png) [@GBulleri](https://community.hubspot.com/u/GBulleri)\
**Post date:** [November 24, 2021, 3:08pm UTC](https://community.hubspot.com/t/webhook-url-not-accepted/47508/1 "2021-11-24T15:08:07Z")

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Hi,

I opened a ticket at the official support but still no answers!

May be that the commnunity can help me!!

When, from my developer account, I write a valid URL into the webhook target URL field, after clicking SAVE Hubspot raises an error inviting me to contact tech support:

“Something went wrong when saving you changes”. I tried many times and in different days.

 ![GBulleri_0-1637766221401.png](https://d2qpr2jzcazej7.cloudfront.net/original/3X/8/6/86d2eba3c8ffcd24fb66f2db574195a3d4bd87fd.png)

May be an SSL issue?

Thank you

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**Author:** ![dennisedson](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/dennisedson/32/28044_2.png) [@dennisedson](https://community.hubspot.com/u/dennisedson)\
**Post date:** [November 24, 2021, 8:25pm UTC](https://community.hubspot.com/t/webhook-url-not-accepted/47508/2 "2021-11-24T20:25:55Z")

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@GBulleri ,

I think the underscore is the issue. You will also need to have SSL for that url.

You could do a quick test removing the underscore and see if that is accepted.

Ideally, you will be able to update that underscore to a dash for your app

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<div class="post-metadata">

**Author:** ![GBulleri](https://avatars.discourse-cdn.com/v4/letter/g/898d66/32.png) [@GBulleri](https://community.hubspot.com/u/GBulleri)\
**Post date:** [November 24, 2021, 8:33pm UTC](https://community.hubspot.com/t/webhook-url-not-accepted/47508/3 "2021-11-24T20:33:13Z")

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Hi,  
you are right: the underscore is the issue!!!  
Thank You very much!

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<div class="post-metadata">

**Author:** ![GBulleri](https://avatars.discourse-cdn.com/v4/letter/g/898d66/32.png) [@GBulleri](https://community.hubspot.com/u/GBulleri)\
**Post date:** [November 26, 2021, 8:59am UTC](https://community.hubspot.com/t/webhook-url-not-accepted/47508/4 "2021-11-26T08:59:34Z")

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Hi,

thanks to you suggestion I was able to go ahead with the webhook development.

My webhook is now working but it is raising error 500; If I run it by postman everything is fine (please look at the attached image)

 ![GBulleri_0-1637917008475.png](https://d2qpr2jzcazej7.cloudfront.net/original/3X/c/1/c1f30d4526c76179f4cc2b98dfb2a4208c8b678b.png)

Can you help me to understand why I see error 500?

Regards

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<div class="post-metadata">

**Author:** ![dennisedson](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/dennisedson/32/28044_2.png) [@dennisedson](https://community.hubspot.com/u/dennisedson)\
**Post date:** [November 29, 2021, 4:13pm UTC](https://community.hubspot.com/t/webhook-url-not-accepted/47508/5 "2021-11-29T16:13:40Z")

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@GBulleri

Is this issue persisting?

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<div class="post-metadata">

**Author:** ![GBulleri](https://avatars.discourse-cdn.com/v4/letter/g/898d66/32.png) [@GBulleri](https://community.hubspot.com/u/GBulleri)\
**Post date:** [November 29, 2021, 4:20pm UTC](https://community.hubspot.com/t/webhook-url-not-accepted/47508/6 "2021-11-29T16:20:38Z")

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Hi,

thank you for you answer.

I just finished now and I explain to the community what happened:

The webhook listener was a webservice (ASMX): I realized that an ASMX webservice cannot accept

json arrays because the .NET dictionary raises a fatal error.

A not-array payload is working fine!!..but HubSpot send arrays…

I replaced the ASMX with a Powershell script and now everything is working fine: just completing the test

Thank You