CIG and Web methods integration

Hi Experts,

One of our customers uses Oracle JDE as their ERP and would like to connect with Ariba strategic suite and CA. They have web methods as their integration tool. My understanding of handling inbound / outbound messages is

Message that come from AN to CIG and to middle ware ( example order confirmation )

In CIG we create HTTPS connection ( instead of Add-on ) nad provide middleware URL and credentials. This will take care of sending the message to middle ware

Messages coming from middle ware to CIG ( exmaple PO created in Oracle )

In the middleware, we use a soap adpater and post PO as SOAP message. target URL would be URL https://testacig.ariba.com/cxf/receiveSOAP with P user credentials.

Is this the right approach?