You have activated Event-Based Revenue Recognition function for project. You post timesheet on the WBS Element and check the Journal Entry created by the Revenue Recognition. You find the WBS Element assigned is like PROJECT.0.1, however, before upgrade, that should be like PROJECT.1.1.
SAP S/4HANA Cloud 2208
It is a system error.
The fix will be provided in HF05 (weekend of Sep 16).
For existing wrong postings, you can execute period end closing of Renuve Recognition after the fix.
WBS Element, cost, revenue, reveue recognition, project, event-based, coding block. , KBA , CO-PC-OBJ-EBR , Event-Based Revenue Recognition , Problem