Solution : https://service.sap.com/sap/support/notes/1281987 (SAP Service marketplace login required)
Key words : 
language-dependent values, call transaction se16, object types fn, incorrect table entry, symptom table tbo01, table tbo01, object type, table contents, table entries, master data
Related Notes : 
       
| 922685 | General object number: Abbreviations ATY and OPR duplicated | 
| 763562 | Incorr. table entries in TBO01 | 
| 425457 | General object numbr: English abbreviation "TSK" duplicated |