Solution : https://service.sap.com/sap/support/notes/500252 (SAP Service marketplace login required)
Key words :
infocube maintenance transaction rsdcube, create data class zdcub, data classes previously assigned, invalid data class, dcube data class, data class disappears, dcubenew data class, data classes disappear, data classes created, start report rsdg_datcls_assign
Related Notes :
| 46272 | Implement new data class in technical settings |