Solution : https://service.sap.com/sap/support/notes/1361090 (SAP Service marketplace login required)
Key words :
application->ipmo->bd->function group->, - object layer->function module->create, attached correction instructions automatically, symptom hlevel item number, hlevel item number, field dli-parent_itemno, clearing item, billing document, code change, solution implement
Related Notes :
| 1166603 | Parent item guid not sent to Pricing while creating Invoices |
| 787678 | Regenerating IPM Billing Engine applications |