{"id":"bid_portal_documents","columns":[{"name":"bid_id","type":["string","null"]},{"name":"contract_no","type":["string","null"]},{"name":"title","type":["string","null"]},{"name":"document_name","type":["string","null"]},{"name":"document_type","type":["string","null"]},{"name":"document_description","type":["string","null"]},{"name":"document_url","type":["string","null"]},{"name":"insert_date","type":["string","null"]},{"name":"retrieved_url","type":["string","null"]},{"name":"status","type":["string","null"]},{"name":"bytes","type":["integer","null"]},{"name":"error","type":["string","null"]},{"name":"captured_date","type":["string","null"]}],"empty_values":"CSV empty fields and JSON null mean unavailable; an explicit zero is numeric zero.","source_reference":"Source URL plus page, row, column, or line fields where supplied. Financial columns keep their own budget stages."}