Solution : https://service.sap.com/sap/support/notes/1075464 (SAP Service marketplace login required)
Key words :
shpcon error message hudialog 400, batch split subitem, attached correction instructions, message whscon, idoc inbound, open qty &3, terms delvry03, idoc_input_delvry reason, symptom occurs, handling units
Related Notes :
| 1617642 | HUDIALOG 400 when packing batch in several handling units |
| 1082002 | HUSELECT 008 during confirmation for goods issue |