Hi @avvidya931 ,
I assume you have added a new source (HTTP API) in AEP. If not, please create one.
- Once you create it, you can go to that connection (Source -> Accounts -> click the link of the HTTP API source)
- On the right hand side you will see the streaming endpoint and that will have the connection id that you are looking for.
Hope this helps!
Regards,
Chetanya