Solution : https://service.sap.com/sap/support/notes/1230750 (SAP Service marketplace login required)
Key words :
time event, field fin_conf, terms bapi_prodordconf_create_te, bapi_pi_timeevent1 reason, table timeevents, record type, recordtype field, partial confirmation, final confirmation, bapi interface
Related Notes :
1586230 | FAQ: Confirmation using BAPI in production order |