Solution : https://service.sap.com/sap/support/notes/431351 (SAP Service marketplace login required)
Key words :
transaction me22nto change relevant dates, additional key words me22n, call transaction se37, generate message records, ekko-ebeln space, ' partner data remains, function module mm_initialize_partners, choose 'change', function module, boole space
Related Notes :
| 542645 | ME22N: No partner determination when checking/saving PO |
| 518333 | ME21 Add to purchase order, problems with partner/message |
| 459350 | FAQ: Partner determination in purchasing |
| 308215 | ME22N:Update termination after determining partners |