Solution : https://service.sap.com/sap/support/notes/88294 (SAP Service marketplace login required)
Key words :
additional key words mc88, ma099 'internal error 010', period error, program error, planning table, -level planning, related months, enter data, overlap periodically, program terminates
Related Notes :
| 154679 | Hot Package 52: Notes |
| 89656 | 4.0A: Error in flexible planning |