Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_204_463 ( id number, "year" number, "division" number, "league" text, "regular season" text, "playoffs" text, "open cup" text )

### Question ###
what is the only year that the seattle sounders qualified for the open cup ?

### Accurate SQL ###

SELECT "year" FROM table_204_463 WHERE "open cup" <> 'did not qualify'