Zendesk Pipeline throwing HTTP 400 Error in REST Post

Hey folks,

I’m building a pipeline to pull data from an old Zendesk instance into a new one. The pipeline validates (REST Get -> JSON Splitter -> Mapper -> Rest Post), but it’s throwing an HTTP 400 error in the Zendesk API.

Is anyone familiar with setting up pipelines for Zendesk? There has to be something here that I’m missing.