Batch Update Company Requests Failing

[AngusWonde]

I'm sending requests to the HubSpot V3 API's batch update company endpoint (POST /crm/v3/objects/contacts/batch/upsert) and all my requests are failing with a 400 error.

The documentation says to pass an `idProperty`, `id`, and `properties`. My understanding is that the `idProperty` field is optional since I want to update using the Record Id which comes with HubSpot. Documentation for this is here. 

When I send it without the `idProperty`, however, I get the following response: 

{"status":"error","message":"Updates in a single batch must specify its unique property.","correlationId":"ed172328-5119-4fc2-921d-086655f07403","category":"VALIDATION_ERROR"}

and when I set the `idProperty` to `hs_object_id` to explicity say that I want to use HubSpot's Record Id I get the following error message: 

{"status":"error","message":"Unable to perform update/upsert by non-unique 0-2 property hs_object_id in portal ID 9462969","correlationId":"32ae3c0d-34cc-4d1f-ab4e-405529bbc9aa","category":"VALIDATION_ERROR"}

I've gone back and forth for a while on this and feel like I've tried every option. Any help would be appreciated, thanks!

[SteveHTM · Accepted solution]

@AngusWonde - see recent thread on similar issues. https://community.hubspot.com/t5/APIs-Integrations/Contact-batch-upsert-endpoint/td-p/1008345 

Seems likely that something is broken here.

Steve