Solution : https://service.sap.com/sap/support/notes/483733 (SAP Service marketplace login required)
Key words :
system displays error message cj418, terms cj418 solution implement, budgeted wbs element, wbs element, 'wbs element &, executed online, bapi_project_maintain, correction
Related Notes :
| 536137 | CJV4, BAPI_PROJECT_MAINTAIN: Expand / change structure II |