Solution : https://service.sap.com/sap/support/notes/126678 (SAP Service marketplace login required)
Key words :
work item type exists independently, archive development kit reason, source code corrections mentioned, attached function module sww_wi_related_to_gen_obj_read, attached function module edi_idoc_links_status_update, recognizing required work items, source code correction, work item linked, sap business workflow, function group swwf
Related Notes :
573656 | Collective note relating to Archiving in workflow |
359400 | IDoc: Archiving terminates with error B2001 |
153205 | Direct deletion of type C work items |
49545 | Deleting unnecessary work items |