When working on a customer site recently I was made aware that their system to use the NSX Central CLI via the API had stopped functioning. The system had stopped working when the upgrade to NSX 6.2.3 happened.

Click here for my previous post on how to use the Central CLI API.

When submitting the request, they would always get the following response:

The resource identified by this request is only capable of generating responses with characteristics not acceptable according to the request "accept" headers.

It turns out that there was a change made to the API, and an additional header is required to make it work with NSX 6.2.3 & 6.2.4. You now need to add the following to the existing headers:

Accept: text/plain

Here is an example of the headers configured in a Postman Client.

A big shoutout to the vRealize Network Insight dev team for the tip to getting this working!