EFF - Flexfield Page Task Flows

SELECT DESCRIPTIVE_FLEXFIELD_CODE,
       FEUPTF.FLEXFIELD_USAGE_CODE AS CATEGORY_CODE,
       FEUPTF.PAGE_CODE,
       FEUPTF.CONTEXT_CODE,
       FEUPTF.SEQUENCE_NUMBER
FROM FND_EF_UI_PAGE_TASK_FLOWS FEUPTF
WHERE DESCRIPTIVE_FLEXFIELD_CODE = :ip_flexfield_code
  AND (
        CONTEXT_CODE = :ip_context_code
        OR COALESCE(:ip_context_code, NULL) IS NULL
      )
ORDER BY FEUPTF.SEQUENCE_NUMBER;