Solution : https://service.sap.com/sap/support/notes/1354186 (SAP Service marketplace login required)
Key words :
sap release support package level7, lower support package level, lob-type database types, abap dictionary data types, abap data dictionary, normal table data, abap dictionary reason, store short lobs, support package levels, 11 support package 02alternatively
Related Notes :
| 1522913 | DB6: DB object check and LONG/LOB conversion |