Solution : https://service.sap.com/sap/support/notes/528677 (SAP Service marketplace login required)
Key words :
additionally require table 'rpsco_y', drilldown reporting display, executing report z_convert_selscreen, project information system, project system, automatic conversion, terms hierarchy, output type, application class, conversion reports
Related Notes :
| 330335 | Drilldown: select / change output type |