SELECT T1.transaction_type_description FROM Ref_Transaction_Types AS T1 JOIN TRANSACTIONS AS T2 ON T1.transaction_type_code  =  T2.transaction_type_code GROUP BY T1.transaction_type_code ORDER BY COUNT(*) DESC LIMIT 1
Show the description of the transaction type that occurs most frequently.
SELECT T1.transaction_type_description FROM Ref_Transaction_Types AS T1 JOIN TRANSACTIONS AS T2 ON T1.transaction_type_code = T2.transaction_type_code GROUP BY T1.transaction_type_code ORDER BY COUNT ( * ) DESC LIMIT 1
select t1 . transaction_type_description from ref_transaction_types as t1 join transactions as t2 on t1 . transaction_type_code = t2 . transaction_type_code group by t1 . transaction_type_code order by count ( * ) desc limit value
Show the description of the transaction type that occurs most frequently .