I am leveraging Publication Lists in Marketing Cloud to manage unsubs from unique Business Units so that a contact can choose to unsubscribe from one business unit but not all. I also need this to be reflected in Salesforce as well, so sales reps are able to see which business units they can reach out to a contact about.
I've created a custom multi-select SF Contact field that I am trying to update via a Journey Builder, where the business units (Publication Lists) are the field options, but can't figure out how to bring in Publication List subscribers to a Journey to make the update.
My understanding of Marketing Cloud is very elementary, so I could be going about this all wrong. Could someone point me in the right direction for how to best solve this?