Document URL: https://access.redhat.com/documentation/en-us/red_hat_cloudforms/4.5/html-single/red_hat_cloudforms_rest_api/#control-attributes Section Number and Name: 1.4.1 control attributes Describe the issue: as raised from bz#1479483 the possible values for sort_order are asc and desc - as per http://manageiq.org/docs/reference/latest/api/overview/query . ascending and descending will not work in 5.8 Suggestions for improvement: update documentation as upstream stopped suporting the fully named options. Additional information: see bz#1479483