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Index '%1' for table '%2' would not be unique

Item	Value
Constant	SQLE_INDEX_NOT_UNIQUE
ODBC 2 State	23000
ODBC 3 State	23000
Parameter 1	Name of the index that would not be unique.
Parameter 2	Name of the table that contains the index.
Severity	16
SQLCODE	-196
SQLSTATE	23505
Sybase error code	548

Probable cause

You attempted to insert or update a row that has the same value as another row in some column, and there is a constraint that does not allow two rows to have the same value in that column.