Solution : https://service.sap.com/sap/support/notes/114159 (SAP Service marketplace login required)
Key words : 
function fromnote 320456 updall eq 'x', additional parameter 'exporting list, calling report rm06enp0 automatically, function module 'rv_condition_reset', condition distributionfunction modules, error message 'dynpro_send_in_background', include file lvkoif01, symptom ale distribution, report rm06enp0 outputs, remaining contract data
Related Notes : 
       
| 577595 | Termination when posting IDocs | 
| 320456 | RM06ENP0 correction price if pricing date in future |