Jira DataCenter Connection asking for clientId and clientSecret

When I try to activate the JIRA integration to our Jira DataCenter it is asking for a clientId and a clientSecret. Those are usually issued in the OAuth flow during the login. If I enter in a Jira AccessKey for thoe values it will go through the normal OAuth login flow, but then tells me that the providede clientId and clientSecret are invalid.

Why is it asking for a clientId and clientSecret instead of relying on the OAuth login?

How am I supposed to generate a clientId and clientSecret to use on this screen?