Solution : https://service.sap.com/sap/support/notes/83815 (SAP Service marketplace login required)
Key words :
error message ma298 'assignments exist, additional key words transaction mc62, sym text-----------------------------------------------------------------------200 fully delete, planning hierarchy maintenance, lower levels due, prerequisites function extensionimplement, text symbols, -tree completely, program sapmmcp3, source code
Related Notes :
| 104981 | Planning hierarchy: deleting product groups |
| 86340 | Planning hierarchy: multi-level - delete |
| 65958 | Actual data is deleted by planning hierarchy update |