Solution : https://service.sap.com/sap/support/notes/352440 (SAP Service marketplace login required)
Key words :
additional key words short dump, plaf-plnum = blank, contact development support, user-defined programs, dump 'no_plnum_specified', user dialog, planning table, repetitive manufacturing, planned order, initial number
Related Notes :
| 309286 | MF50: Short dump NO_PLNUM_SPECIFIED |
| 119265 | MF50:In spite of Cancel/Exit plnd order is created |