Solution : https://service.sap.com/sap/support/notes/535688 (SAP Service marketplace login required)
Key words :
support package 01 solution implement, support package 44 release 4, support package 35 release 4, mass confirmation reason, 'simplified forecast work, confirmation cancellation, work online, actual-work, prerequisites release 4, symptom removal
Related Notes :
648292 | RU510 w/ confirmation for operation w/o milestone function |
448321 | Milestone functions in the background |
304989 | Indistinct cancellation for PS and PM confirmations |
105183 | Forecast work in operation apparently incorrect |