Hello @achandra, This is an Old Post yet closing the same by sharing the feedback concerning your ask for wider audience. The API is failing owing to Space between "NOW-" & "7DAYS". There shouldn't be any gap between the same.
In Summary, the Command is below, where Customer needs to set the HTTP(s) header, Solr Host & Solr Port accordingly. Additionally, the Example uses "ranger_audits" Collection & "evtTime" field to delete any Documents older than 7 Days: