Solution : https://service.sap.com/sap/support/notes/794263 (SAP Service marketplace login required)
Key words :
menu path edit --> command --> insert command, system alos deletes additional components, solution start transaction se91, system issues message co579, attached zppsfc172 correction report, system writes message c2 346, c2 message class, 'master data incorrect, long text]note, discontinuation group loose
Related Notes :
| 869623 | Parallel discontinuation and locked components |