Solution : https://service.sap.com/sap/support/notes/791894 (SAP Service marketplace login required)
Key words :
terms if_ex_badi_le_shipment~before_update reason, interface badi badi_le_shipment, prerequisites program error, source code correction, transaction vt01n, handling units, transaction vt02n, solution implement, assigned deliveries, deliveries
Related Notes :
620270 | Selection of handling units via a document |
593803 | Term. of update during change of transportation |