Solution : https://service.sap.com/sap/support/notes/1530933 (SAP Service marketplace login required)
Key words :
transactional remote function call, high load situation occurs, work item remain locked, background work item informs, background steps remain, background work item, affected work item, long wait time, background work items, affected work items
Related Notes :
| 888279 | Regulating/distributing the workflow load |