Hello @sherryrao1 , I think we are already working on one support case
for this one. I am outlining the details for reference here as well:1.
Customer Attributes are available in AA and Target only.2. The uploaded
IDs are not synced currently so uploading them via CS will not be of
much help here.3. In scenarios where ID sync is not present prior to the
data upload, AAM is a way in!4. There is similar data file upload
feature in AA but it will incur server calls,4. If you could share any
insight...