Why sometimes groups/data is missing in a slice report data section?
Slicing a report allows you to group tabular data sharing common values in fields included in the report. You can then select from the slice tree or links and view only the report data that matches the selected field values. For example, in an incidents report, you could slice by the assigned staff member to display incidents assigned to that person. You could then further break down the incidents assigned to the staff member by other fields such as status.
However, it is important to remember that slice report data applies to the report page that is currently opened. For example, if in your report you have a limitation to display only 10 records per page, slice report data will be applied to those 10 records only. This can give the impression that some groups, as an example, are missing. By understanding how slicing is applied, you can adjust the report to output all applicable records.
For additional information, refer to the 'Slicing report data' section in online documentation for the version your site is currently running. To access Oracle Service Cloud manuals and documentation online, refer to the Documentation for Oracle Service Cloud Products.