Solution : https://service.sap.com/sap/support/notes/432128 (SAP Service marketplace login required)
Key words :
symptom user exit coom0003, access vbap item data, advance development solves, parameter type spec, type pass valuei_objnr, vbap-objnr xuse, function module sd_vbap_read_with_objnr, function group v45i, settlement rule reason, customer exit
Related Notes :
630674 | Error: Item / status object does not exist |
576482 | Performance with many items |
424439 | User exit automatic generation settlement rule sales order |