I have 2 BU and 1 parent BU. In the parent BU, all Subscribers can be viewed. For each of the child BUs, I would like only respective Subscribers to be accessible.
For this - I am using Subscriber Filter feature, and filtering based on a custom attribute.
I would like to know, as Salesforce Support wasn't able to advise - how often does the Subscriber Filter get refreshed. Support team was able to confirm there is a schedule only, not its frequency. Appreciate if anyone can advise. Thank you.