Solution : https://service.sap.com/sap/support/notes/618983 (SAP Service marketplace login required)
Key words : 
sap internally displays floating point numbers, oracle database displays floating point numbers, system writes 8 byte abap floating values, sem-bps transaction data buffer, planning function type deletion reason, displays floating point numbers, delete floationg point numbers, minimal rounding differences remain, floating point numbers, bytes floating key figures
Related Notes : 
       
| 1144178 | Invalid float values |