Solution : https://service.sap.com/sap/support/notes/1398760 (SAP Service marketplace login required)
Key words :
execute transaction mr11 'maintain gr/ir clearing account' fora purchasing document, message log displays warning message ckmlgrir 005 'order & item &, account maintenance document, purchase order item, purchase order number, processed --> long text', message text, ckmlgrir 005 reason, terms ckmlgrir005, program error
Related Notes :
| 843022 | MR11: Error log, purchase order number is missing |