Source Var Reporting Limits
Beginning April 20, 2016, the total number of unique “source” var values used in Source Reporting will be limited to 10,000 per account. This well-exceeds the most common use cases and the platform average of unique values per account. It allows for continued efficiency and reliability in daily reporting.
Each day during the list and profile counting process, source var values will be fully aggregated and counted. Those values appearing on the least number of profiles will be excluded from aggregate reporting until the source report reaches 10,000 unique source values.
This will not affect data on user profiles. The var value will remain for all users, allowing it to be recounted as part of the next day’s list count. This will allow for new values to be ultimately included in Source Reporting.