Symptom
There's error "Assign source G/L account xxx for Event-Based WIP posting" shown in APP "Postprocess Event-Based Postings - Product Costing" or "Manage Product Costing Errors".
Environment
SAP S/4HANA Cloud Public Edition
Cause
The accounts are not maintained under WIP Sources.
Check Configuration Activity / SSCUI 103940 - "Event-Based WIP and Variance Posting",
for 'RSEBW' key, check 'Define WIP Sources', choose one source, then click 'Assign G/L Accounts',
find that accounts in error message do not exist in any one of WIP sources.
Resolution
Maintain those accounts into different WIP Sources based on their using scenarios via Configuration Activity / SSCUI 103940 - "Event-Based WIP and Variance Posting".
Afterwards, simulate and post the errors to generate missing event based postings in APP "Postprocess Event-Based Postings - Product Costing".
See Also
2737228 - SAP S/4HANA Cloud: Event-Based Work in Process (WIP) Posting for Product Cost by Order
Keywords
WIP Sources, 103940, Event-Based WIP and Variance Posting, Postprocess Event-Based Postings - Product Costing, Assign source G/L account, FCO_EBW034, EBWP, EBVP, FCO_EBW 034. , KBA , CO-PC-OBJ-PER , Product Cost by Period , Problem