# 404 when creating a list

**URL:** <https://community.hubspot.com/t/404-when-creating-a-list/137600>\
**Category:** APIs & Integrations\
**Tags:** contacts\
**Created:** [August 7, 2025, 8:52am UTC](https://community.hubspot.com/t/404-when-creating-a-list/137600 "2025-08-07T08:52:00Z")\
**Posts on this page:** 6\
**Page:** 1

<div class="post-metadata">

**Author:** ![yoLotus](https://avatars.discourse-cdn.com/v4/letter/y/e99b99/32.png) [@yoLotus](https://community.hubspot.com/u/yoLotus)\
**Post date:** [August 7, 2025, 8:52am UTC](https://community.hubspot.com/t/404-when-creating-a-list/137600/1 "2025-08-07T08:52:00Z")

</div>

Hello,  
Has anyone here encountered a 404 error when using the [V3 list creation endpoint](https://developers.hubspot.com/docs/reference/api/crm/lists#post-%2Fcrm%2Fv3%2Flists%2F)?

I’m trying to create a list via the API, using filters (see below) based on a timeline event property defined by my hubspot app.  
Until 2 days ago, this setup worked perfectly. But now, my API calls consistently fail with a 404 response and the error message:

_The following properties did not exist for the object: accessLink._

But:

- the timeline event and the accessLink property still exist.
- I’m able to create the exact same list in the hubspot UI, with same filters.
- everything still works fine on my development app. Just the production app is affected.

Any idea what might be going on here? Is this a known issue or something that recently changed?

```lia-code-sample
POST https://api.hubapi.com/crm/v3/lists/
{
 "objectTypeId": "0-1",
 "processingType": "DYNAMIC",
 "listFolderId": 0,
 "name": "list name",
 "filterBranch": {
 "filterBranches": [ 
 {
 "filterBranches": [],
 "filters": [
 {
 "eventTypeId": "<eventTypeID>",
 "filterLines": [
 {
 "property": "<propertyName>",
 "operation": {
 "operator": "ENDS_WITH",
 "includeObjectsWithNoValueSet": false,
 "values": [
 "tokenValue"
 ],
 "operationType": "MULTISTRING"
 }
 }
 ],
 "filterType": "INTEGRATION_EVENT"
 }
 ],
 "filterBranchOperator": "AND",
 "filterBranchType": "AND"
 }
 ],
 "filters": [],
 "filterBranchOperator": "OR",
 "filterBranchType": "OR"
 }
}

```

---

<div class="post-metadata">

**Author:** ![Jaycee\_Lewis](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/jaycee_lewis/32/61352_2.png) [@Jaycee\_Lewis](https://community.hubspot.com/u/Jaycee_Lewis)\
**Post date:** [August 7, 2025, 9:24pm UTC](https://community.hubspot.com/t/404-when-creating-a-list/137600/2 "2025-08-07T21:24:12Z")

</div>

Hey, @yoLotus 👋 Have you taken this one to support yet? If not, you may want to report the issue there if it is persisting as of today. I’d specify you are not asking for coding help but are looking for insight into the error message itself. — Jaycee

---

<div class="post-metadata">

**Author:** ![yoLotus](https://avatars.discourse-cdn.com/v4/letter/y/e99b99/32.png) [@yoLotus](https://community.hubspot.com/u/yoLotus)\
**Post date:** [August 8, 2025, 5:29am UTC](https://community.hubspot.com/t/404-when-creating-a-list/137600/3 "2025-08-08T05:29:35Z")

</div>

Hello [@Jaycee\_Lewis](https://community.hubspot.com/t5/user/viewprofilepage/user-id/127074) , I had a chat with a non-technical person from Hubspot staff who redirected me to the Slack developers with no success so far.  
I may have not enough right to email Hubspot Technical support, I’ll see with another member of my team. I’ll post here if I have an answer.  
Thanks you, have a good day

---

<div class="post-metadata">

**Author:** ![Jaycee\_Lewis](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/jaycee_lewis/32/61352_2.png) [@Jaycee\_Lewis](https://community.hubspot.com/u/Jaycee_Lewis)\
**Post date:** [August 8, 2025, 3:17pm UTC](https://community.hubspot.com/t/404-when-creating-a-list/137600/4 "2025-08-08T15:17:14Z")

</div>

Hey, @yoLotus I definitely don’t want you to feel like you’re being bounced around. Is it just happening with this specific list? Or with other requests to the same endpoint? — Jaycee

---

<div class="post-metadata">

**Author:** ![yoLotus](https://avatars.discourse-cdn.com/v4/letter/y/e99b99/32.png) [@yoLotus](https://community.hubspot.com/u/yoLotus)\
**Post date:** [August 9, 2025, 12:56pm UTC](https://community.hubspot.com/t/404-when-creating-a-list/137600/5 "2025-08-09T12:56:12Z")

</div>

Hey [@Jaycee\_Lewis](https://community.hubspot.com/t5/user/viewprofilepage/user-id/127074) , I didn’t feel like it at all, no worries 🙂  
I’m aware that’s a strange issue, I do succeed to create other list based on others timelive events (having the same `accessLink` token btw). It’s quite difficult to get what’s happening so far.

Best regards

---

<div class="post-metadata">

**Author:** ![GRajput](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/grajput/32/102020_2.png) [@GRajput](https://community.hubspot.com/u/GRajput)\
**Post date:** [August 13, 2025, 7:13am UTC](https://community.hubspot.com/t/404-when-creating-a-list/137600/6 "2025-08-13T07:13:46Z")

</div>

Hi @yoLotus

Your code seems all good here, if the issue is with only one timeline event, then it must be because of some HubSpot internal glitch. You can contact support for more help.

Thanks!