When adding multiple offline data sources to a profile merge rule, I want to understand whether this requires the same authentication ID across each of the different data sources or whether this can be different per data source.
Link: Profile Merge Rules Dashboard
Example screenshot in the documentation:
I have a scenario whereby customers can authenticate using different IDs across my companies digital real-estate:
Website 1 = ID A
Website 2 = ID B
APP 1 = ID A
APP 2 = ID C
APP 3 = ID D
You need same ID to be synced with all datsources in your PMR that way you will be able to identify the same user.
From my understanding, i guess its requires the same authentication ID across each of the different data sources
Find detail here: Create a Profile Merge Rule
Example: Does Profile Merge Rules capture a second device if it has not been authenticated?
General Use Cases for Profile Merge Rules