Solution : https://service.sap.com/sap/support/notes/612324 (SAP Service marketplace login required)
Key words : 
system issues message oio 156'delivery item & &, 'shipment document flow table'vtfa, 'shipment documentflow table vtfa, loading area/shipment, patch schedule information, run report roio_sp_repair_db, sap note urgently, -mine-specific note, deleted delivery, loading area
Related Notes : 
       
| 545706 | OLM Packing repair program creates incorrect entries | 
| 543401 | Deliveries not packed by OLM packing program | 
| 490854 | Inconsistencies due to deleted deliveries |