The following lines contain the word 'select', 'insert', 'update' or 'delete':
SELECT fifst.id_flex_num
into L_NUM
FROM fnd_id_flex_structures fifst
WHERE fifst.application_id = 401
AND fifst.id_flex_code = 'MSTK'
AND fifst.enabled_flag = 'Y'
AND fifst.freeze_flex_definition_flag = 'Y'
AND rownum =1
ORDER BY fifst.id_flex_num;