We've built and integration between HubSpot and our system on top of HubSpot API. From last Friday we are experiencing errors when accessing
GET /properties/v1/contacts/properties endpoint via OAuth1. The error is:
401 Multiple authentication targets presented for access_token!
Other endpoints we use i.e
/contacts/v1/lists/all/contacts/all works fine. I know that OAuth1 is deprecated, but from what I found on the forum it should still work for older apps, like ours. We would like to migrate to OAuth2 in a long term, but this is not a seamless process because we have already many customers using the integration.
Any advice ?
Thanks in advance