Eloqua Opportunity Import

I am planning to import opportunities using the Salesforce Integration app. According to the guide, it mentions that setting up an External Call is required to activate opportunities. Is this process necessary?

Below is the process I reviewed for closed-loop reporting.

If there is a specific guideline for importing opportunities through the Salesforce Integration app, could you kindly share it?

• External calls synchronize Oracle Eloqua with external CRM systems. Four external calls are required for closed-loop reporting:

1. Create Campaign
2. Update Campaign
3. Contact Campaign Association
4. Lead Campaign Association