# My ClickUp API isn’t working, not sure why?

**URL:** <https://community.make.com/t/my-clickup-api-isn-t-working-not-sure-why/103775>\
**Category:** Questions\
**Tags:** api\
**Created:** [February 17, 2026, 5:22pm UTC](https://community.make.com/t/my-clickup-api-isn-t-working-not-sure-why/103775 "2026-02-17T17:22:37Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Magdalena\_Wilhelm](https://avatars.discourse-cdn.com/v4/letter/m/898d66/32.png) [@Magdalena\_Wilhelm](https://community.make.com/u/Magdalena_Wilhelm)\
**Post date:** [February 17, 2026, 5:22pm UTC](https://community.make.com/t/my-clickup-api-isn-t-working-not-sure-why/103775/1 "2026-02-17T17:22:37Z")

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### 🎯 What is your goal?

Now I want to use the ClickUp API to link the two tasks under “Related.” For this, I set the following URL in the step: /api/v2/task/ID1/link/ID2. I need the IDs from the previous steps, but somehow it doesn’t seem to work.

### 🤔 What is the problem & what have you tried?

I built a larger application. First, a webhook is triggered, through which I receive certain data. Then, a task is created in ClickUp. I want the information sent by the webhook, “MWK Werkzeug- und Vorrichtungsbau GmbH #Chemnitz / 86b8anwhj”, to be separated so that I get the ClickUp ID “86b8anwhj”. Additionally, I also have the ClickUp ID of the task that I created.

Now I want to use the ClickUp API to link the two tasks under “Related.” For this, I set the following URL in the step: /api/v2/task/ID1/link/ID2. I need the IDs from the previous steps, but somehow it doesn’t seem to work.

### 📋 Error messages or input/output bundles

Also everytime the error comes:  
RuntimeError  
[400] JSON\_001: Unexpected token ‘u’, “undefined” is not valid JSON

Origin  
ClickUp

### 🔗 Create public scenario page

[https://eu1.make.com/public/shared-scenario/pMsDlVUUhbS/snapaddy](https://eu1.make.com/public/shared-scenario/pMsDlVUUhbS/snapaddy)

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<div class="post-metadata">

**Author:** ![Stoyan\_Vatov](https://avatars.discourse-cdn.com/v4/letter/s/5daacb/32.png) [@Stoyan\_Vatov](https://community.make.com/u/Stoyan_Vatov)\
**Post date:** [February 18, 2026, 8:41am UTC](https://community.make.com/t/my-clickup-api-isn-t-working-not-sure-why/103775/3 "2026-02-18T08:41:27Z")

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Hey Magdalena,

It says the scenario isn’t available.

Regardless, can you show some screenshot of what the incoming data looks like and how the API call modules is configured?

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<div class="post-metadata">

**Author:** ![Make\_Bot](https://dub1.discourse-cdn.com/flex013/user_avatar/community.make.com/make_bot/32/14661_2.png) [@Make\_Bot](https://community.make.com/u/Make_Bot)\
**Post date:** [May 19, 2026, 7:48am UTC](https://community.make.com/t/my-clickup-api-isn-t-working-not-sure-why/103775/4 "2026-05-19T07:48:10Z")

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