Solution : https://service.sap.com/sap/support/notes/534236 (SAP Service marketplace login required)
Key words :
line 'delete ct_key index key_tabix, shipping due date list, shipping due date lists, runtime error table_invalid_index occurs, form routine packages_create_do, program error, users display, purchase order, user edits, short intervals
Related Notes :
407000 | VL10: Duplicate deliveries for purchase orders |
113411 | Collective note: VL10 |