Campaign Object does not appear in Campaign Action in the Salesforce Integration App.

Preparing to send Eloqua Campaign information to the linked SFDC.

However, Campaign Object does not appear in Campaign Action in the Salesforce Integration App.

However, Campaign Object appears in other SFDCs.

The two are different SFDCs.

So why is this difference happening?

How do I make the 1st SFDC that I want to link have a campaign?

(Campaign object already exists in SFDC where you want to be linked.)