Solution : https://service.sap.com/sap/support/notes/1081680 (SAP Service marketplace login required)
Key words :
database table /scwm/t_mtr_exec, table /scwm/t_mtr_exec, terms /scwm/tu, call transaction se11, attached correction instructions, transportation unit reason, transportation unit, long runtime, assign deliveries, handling units
Related Notes :
1109846 | Composite SAP note for performance in transaction /SCWM/TU |