Check out Business Analytics Guide for this information.
Thank you.
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Access Context
Data that originates in the solution is access context sensitive. This means that SAP-delivered data sources are associated with access contexts to ensure that data is directed to users who are allowed to view it.
Since the data for a Cloud data source originates from an external source, Cloud data sources have no access context assigned. This means that the data is unrestricted. You should therefore ensure that the data is suitable for all users if you build reports using only Cloud data sources as a basis.
Note
If you use a Cloud data source in a joined or combined data source with SAP-delivered data sources, then the access context of the corresponding SAP-delivered data source serves as the access context of the joined or combined data source.