Solution : https://service.sap.com/sap/support/notes/651895 (SAP Service marketplace login required)
Key words :
standard sap system response, /sapapo/ppm_transfer_mapping bapi_ppmsrvaps_delmulti_plan, external commit control, commit control, /sapapo/scc05, /sapapo/ppm_transfer, commit work, delete ppms, business object, initiator sends
Related Notes :
520161 | Transaction behavior/COMMIT control of BAPIs in APO |