Solution : https://service.sap.com/sap/support/notes/320989 (SAP Service marketplace login required)
Key words : 
system incorrectly displays error message, additional key words rm07ko01, program error, error occurs, consistency check, 045 incorrect price, price unit, detailed description, solution refer, correction instructions
Related Notes : 
       
| 1026379 | MB5K: Misleading error message 045 due to rounding | 
| 216951 | MB5K 045 Incorrect Price |