Solution : https://service.sap.com/sap/support/notes/734530 (SAP Service marketplace login required)
Key words : 
adm     = 410  byte long text logging, size /quantity specifications correspondingly, table entryadm           = administrative data, texttxt_adm       = administrative data, unicode 1-byte system, long text log, long text logs, long text solution, long text loggings, long text logging
Related Notes : 
       
| 1058984 | Frequent audit trail problems (transactions AUT01-AUT10) |