Index name '%1' not unique

Item Value
SQLCODE -111
Constant SQLE_INDEX_NAME_NOT_UNIQUE
SQLSTATE 52W04
Sybase error code 1921
ODBC 2 State S0011
ODBC 3 State 42S11
Parameter 1 Name of the invalid index.

Probable cause 

You attempted to create an index with the same name as an existing index.