Solution : https://service.sap.com/sap/support/notes/1536416 (SAP Service marketplace login required)
Key words :
prerequisites business function mm multiple account assignment, business function mm multiple account assignment, mm multiple account assignment functionality, po account assignment distribution key, mm multiple account assignment, error message mepo857 'change, multiple account assignment, current purchase order item, account assignment item, single account assignment
Related Notes :
| 1617580 | FAQ: Accounting Distribution Service (Limit) Items |
| 1535764 | Accounting change multiple to single should not be allowed |