Solution : https://service.sap.com/sap/support/notes/386597 (SAP Service marketplace login required)
Key words :
/sapapo/ppm_trpid_get_ppm function module, long queue times, full table scan, terms performance reason, source code corrections, blank trpid, program error, application, prerequisites
Related Notes :
370601 | Composite SAP note: APO 3.0 and 3.1 performance |