Solution : https://service.sap.com/sap/support/notes/184541 (SAP Service marketplace login required)
Key words : 
additional key words rm07ko01, material price multiplied, moving average price, decimal places unequal, consistency check, transaction mb5k, rounding errors, rounding differences, program error, solution implement
Related Notes : 
       
| 1026379 | MB5K: Misleading error message 045 due to rounding |