Solution : https://service.sap.com/sap/support/notes/506307 (SAP Service marketplace login required)
Key words : 
short text 'external conversion, sap business information warehouse, shop floor control, prerequisites enhancement solution, /3 backend system system, system status i0580, system supports, i0580 reason, additional information, key figures
Related Notes : 
       
| 515499 | Release restrictions for R/3 Plug-In 2002.1 | 
| 493928 | Preparation for extraction of new key figures into BW |