Primary key column '%1' already defined

Error constant SQLE_PRIMARY_KEY_COLUMN_DEFINED
ODBC 2 State 42000
ODBC 3 State 42000
Parameter 1 Name of the column that is already in the primary key.
Severity 16
SQLCODE –119
SQLSTATE 52009
Sybase error code 1909
Probable cause

You listed the same column name twice in the definition of a primary key.