When certain reports are exported, there is a column labeled Source IDs. These are codes that are used internally to help our system know the source of new contacts as they enter the system. It is possible that a single contact record can be linked to multiple Source IDs.
The list of main source IDs is as follows:
1 – text in
128 – gateway API
2048 – web form
16384 – redeem app
67108865 – birthday ignore
67108992 - birthday ignore / gateway api
67110912 – birthday ignore / web form
67125248 – birthday ignore / redeem app
201326593 – text-in / birthday ignore / birthday user intervention
201326720 – gateway api / birthday ignore / birthday user intervention
The birthday notes are relating to adjusting of birthdays in the contacts database.