We are planning to use Marketing Cloud Connect for one of our business units on Salesforce. But we have 3 other BUs who are not yet on Salesforce and we are manually importing contact lists to Marketing Cloud. For Marketing Cloud Connect, do we have to use Lead/Contact Id from Salesforce as the subscriber key or can we use something else?
The reason is we may have John Smith j.smith@gmail.com (Subscriber key 1234) and the unique identifier (1234) will be consistently used across all 4 BUs so we want to see if it's possible to use the external identifier until the other 3 BUs are ready to get on Salesforce. Appreciate any help or consideration that you all can provide #Ask An Expert #AskAMCExpert
Thanks Bogdan, I figured that was the case and this is a more complex use case.
