Solution : https://service.sap.com/sap/support/notes/205597 (SAP Service marketplace login required)
Key words :
system generates error message me453 'changing consump, account assignment type 'u' unknown, additional key words me21, unknown account assignment, account assignment type, subcontracting purchase requisition, program error, purchase requisition, purchase order, stock indicator
Related Notes :
| 496082 | FAQ: Account assignment in purchasing |