Solution : https://service.sap.com/sap/support/notes/538211 (SAP Service marketplace login required)
Key words :
attached source code corrections, detailed scheduling planning board, terms /sapapo/cdps0, sales order data, symptom bad performance, planning board reads, planning board, planning function, affects performance, heuristic reason
Related Notes :
533272 | Performance problems when reading campaign data |
370601 | Composite SAP note: APO 3.0 and 3.1 performance |