While Creating Contact It Gives Error That Contact Already Exist

Develop, Build & Integrate APIs & Integrations
4

This guy faced a similar issue in past. And his reply worked out well.

Here’s link to his reply about what he did that solved the issue.

https://community.hubspot.com/t5/APIs-Integrations/Create-contact-is-updating-vid-101/m-p/639633/highlight/true#M53638