Cannot synchronize table '%1' since it does not have a primary key

Error constant SQLE_CANNOT_SYNC_TABLE_WITHOUT_PK
ODBC 2 state 42000
ODBC 3 state 42S02
Parameter 1 Name of the table.
Severity 16
SQLCODE -777
SQLSTATE 5RW16
Sybase error code 13787
 Probable cause