Hi Divya, have you tried using the Rally API Test site (here)For User Story as an example: select "HierarchicalRequirement" from the left hand menuEnter a query for a valid User Story: (FormattedID = US00001)Ensure that both "Fetch full object"' and "Beautified JSON output" are checked, then click "Query"The JSON response you get back will contain all the fields for User Story.