Solution : https://service.sap.com/sap/support/notes/458383 (SAP Service marketplace login required)
Key words :
additional key words cj20, main program saplcjwb, /3 support package sapkh45b47, project planning board, standard wbs element, attached program corrections, wbs element, structure planning, short dump, include fcjwbfel
Related Notes :
481469 | Copy WBS element, hierarchy graphic: TABLE_INVALID_INDEX + |
444104 | CJ2B: Short dump when creating WBS elements with reference |