topic Re: Batch Contact Lists Associations Lookup 404 in APIs & Integrations

Batch Contact List Membership Associations Lookup 404

CSTI — Tue, 18 Nov 2025 12:30:23 GMT

Recently a new batch endpoint was 'opened' for checking association list memberships by POST'ing to

... /crm/v3/lists/records/memberships/batch/read

Find the announcement here 3rd heading.
Find the endpoint clearly mentioned in the API docs here.

However, for some reason, I keep 404'ing to that endpoint. Does anyone else have this issue? Did anyone find a fix?

I'm experienced in building API-heavy workflows, and I am confident my setup is correct.

For the record, this is my payload (trunctuated):

{
"inputs": [{"objectTypeId":"0-1","recordId":"150216521035"},{"objectTypeId":"0-1","recordId":"150552981387"},{"objectTypeId":"0-1","recordId":"184716553"},{"objectTypeId":"0-1","recordId":"150224425010"}, and then 26 more]
}

POST'ing to endpoint:

https://api.hubapi.com/crm/v3/lists/records/memberships/batch/read

Anyone experiencing a similar issue?

Re: Batch Contact Lists Associations Lookup 404

chighsmith — Tue, 18 Nov 2025 13:42:59 GMT

Hi @CSTI,

Thank you for posting to the Community!

I understand that you’re getting a 404 error when using the new batch endpoint for contact list associations in HubSpot, despite following the documentation and using the correct payload, and you’re wondering if others have encountered or resolved this issue.

I'd like to tag in some of our Subject Experts to see if they can offer any guidance -- Hi @WesQ @ChristinaKay and @Gonzalo Do any of you all have any advice for @CSTI?

Thank you!

Cassie, Community Manager

Re: Batch Contact Lists Associations Lookup 404

CSTI — Wed, 19 Nov 2025 14:29:03 GMT

Thanks for your reply! Looking forward to hearing from the subject experts!

Re: Batch Contact Lists Associations Lookup 404

CSTI — Thu, 20 Nov 2025 14:42:41 GMT

Hi @chighsmith , any news? Would love to hear more about a potential solution!

Re: Batch Contact Lists Associations Lookup 404

CSTI — Mon, 01 Dec 2025 09:03:33 GMT

Hi @chighsmith , circling back to this. Any news?