issuesDeltaExport REST API not working.

I am trying to execute a POST request to the issuesDeltaExport endpoint exposed by the Fortify SSC v23.1. 

It is documented in the API Documentation. 

This is what I get with Postman:

Inside the headers, I defined the authorization header like: Authorization: FortifyToken <my-token>

I am not able to find info about this endpoint anywhere else. Also, I noticed that with v22.2 of SSC, this endpoint is not documented, but in the 'What's new' document, in the section related to SSC 23.1, there are no info about it. 

Does someone know what I am doing wrong?