Solution : https://service.sap.com/sap/support/notes/766188 (SAP Service marketplace login required)
Key words : 
~ftp/specific/usa_ccg/cpcc/note, amount data entry rounds numbers, solution rebate administration online module, enter calculated rebate screen, data entry reason, symptom amount fields, rebate administration, manual rebate, imrb19fa screen, terms cpcc22
Related Notes : 
       
| 761171 | CPCC Service Package 2.2.300 |