Cell Comments
You can add comments to data cells.
Cloud data source types: Planning, Enterprise Profitability and Cost Management, Financial Consolidation and Close, FreeForm, Tax Reporting
On-premises data source types: Oracle Hyperion Financial Management, Oracle Hyperion Planning
Related Topics:
Adding Cell Comments in EPM Cloud and Oracle Hyperion Planning (Oracle Enterprise Performance Management Cloud or Oracle Hyperion Planning)
Adding Cell Comments in Financial Management
For Oracle Essbase, see Detecting Comments and Unknown Members on Essbase Sheets.