Solution : https://service.sap.com/sap/support/notes/47501 (SAP Service marketplace login required)
Key words : 
additional key words lebnuu01 me5a mban mban_b m_mbanb me52, requirement tracking number, synchronous matchcode update, program lebnuu01, purchase requisition, list displays, database view, database indices, prerequisites, matchcodes
Related Notes : 
       
| 30314 | ME21 ME53 Discrepancy between rqstn and prchs order |