We have a Journey/ interaction where people already in All Subscribers are injecting and those that are not don't.
We have a DE where our Salesforce Person Account data is being imported. We have created the Population to relate this DE with All Contacts.
We have a separate new DE which we use a Query to pull information from the SF Person Account DE and another DE that has am import of a Custom Object in SF. We are doing this as we need attributes from the the Custom Object to make decisions on in the Journey.
Having read other troubleshooting articles on contacts not going into journeys we thought that creating the Population would fix the problem but it has not.
My question is is there are a way to set up MC so that contacts from an SF import can not be in All Subscribers but still enter a Journey? If so, can someone advise what we need to change.
Otherwise, if all contacts need to be added to All Subscribers to enter a Journey what is the most efficient way of doing that? I have read a post about creating a DE, export to ftp and importing but the person who wrote it described it as hacky.