Solution : https://service.sap.com/sap/support/notes/645818 (SAP Service marketplace login required)
Key words : 
picking list picking list, user parameter wrk, parameter id, selection screen, transaction mb26, terms pp_pick_list, commission reason, program error, solution implement, program correction
Related Notes : 
       
| 630888 | MB26: Update for serialized materials | 
| 579835 | MB26: Selection by transactions of order not possible |