Solution : https://service.sap.com/sap/support/notes/1454832 (SAP Service marketplace login required)
Key words :
dirty workflow item log, workflow business object attributes, open workflow instance misses, workflow instance reason, key table data, t-code swi1, workflow instance, program grpc_25_30_upg_wf_instance, error assertion_failed, l_case_type = space
Related Notes :
| 1429483 | PC3.0 Support Pack 6 - Master Note |
| 1167685 | Migerate Open Workflow Instances |