IDFA and GAIDs are to be uploaded as it is in the file. Make sure you use the global data source IDs in the file name as master data source and your custom data source (device advertising type) as target data source.
IDFA and GAIDs are to be uploaded as it is in the file. Make sure you use the global data source IDs in the file name as master data source and your custom data source (device advertising type) as target data source.