What are the required parameters for configuring a Identity Server Client to test it using PostMan? Also, whet are the parameters needed to be sent to identity server Token Endpoint (/connect/token) from PostMan. All these using Identity server 4 with asp.net core identity.
You can follow this quickstart to set up the server. Identity Server Quickstart
The parameters you need to send to the server token endpoint are:
There may be some additional parameters needed but this depends on your grant type. For a grant type of client credentials those params will be enough. You can find more info here Identity Server Token Endpoint