Hi Devs,
I'm trying to add Zendesk Trigger node on n8n platform and I'm using OAuth2 method, I have created a OAuth client under Apps and integration> APIs>Zendesk API>OAuth Clients.
Entered Unique identifier, Client kind=Public, Redirect URLs (Got from n8n node), and secret key was generated. When I use these creds under Zendesk Node on n8n while adding OAuth2 creds I get error saying
Invalid Authorization Request
invalid_request The request is missing a required parameter, includes an unsupported parameter or parameter value, or is otherwise malformed.
What am I missing here?

Are you including the code challenge parameters to enable PKCE? PKCE is required for public client types.