You are using Web Dynpro reports (Cost Centers - Actuals etc.). You find the fields you required is not shown in the report (like WBS Element).
SAP S/4HANA Cloud
The functionality for adding additional fields to the application from the dimension of the underlying view is no longer available.
Itr has been removed by the framework, so it is not specific for this app but all analytical grid apps built on the technology.
The fields can still be added to the application via Extensibility means.
Please check attachment for detailed steps to add additional fields.
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