Contents Index Cannot uniquely identify column '%2' of table '%1' in the current JDBC resultset Cannot update an expression

ASA Error Messages
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Cannot uniquely identify rows in cursor

Item Value
SQLCODE -295
Constant SQLE_CANNOT_UNIQUELY_IDENTIFY_ROWS
SQLSTATE 09W05
Sybase error code 311
ODBC 2 State 42000
ODBC 3 State 42000
Probable cause 

You opened a UNIQUE cursor on a SELECT statement for which a set of columns uniquely identifying each row cannot be generated. One of the tables may not be defined with a primary key or uniqueness constraint, or the SELECT statement may involve a UNION, INTERSECT, EXCEPT or GROUP BY.

Contents Index Cannot uniquely identify column '%2' of table '%1' in the current JDBC resultset Cannot update an expression