https://community.hubspot.com/t5/APIs-Integrations/V1-Contacts-Api-endpoint-equivalents-not-in-CRM-Api-V3/m-p/666177#M54883 <P>Hi Jaycee,<BR />This answers my question. I was under the impression that the createOrUpdate endpoint wouldn't work with the privateAppToken. Originally I had received a property values were not valid error and thought that perhaps the auth token didn't work. It seems that my properties are set as:</P><LI-CODE lang="markup">{ "name": "propertyName, "value": "propertyValue" }</LI-CODE><P>Which is odd since I had no trouble with this format when using apiKey. Strange</P> Fri, 15 Jul 2022 19:07:42 GMT KMartinez82 2022-07-15T19:07:42Z