Removes the candidate's CV without deleting the candidate. Every stored version of the document is deleted, the CV-extracted values (the fromCv fields, jobs, education and the like) are cleared, and the candidate is re-indexed on the data you provided, so it stays searchable on that alone. Skills and qualifications are kept as stored. A candidate with no CV returns 200 with a message saying it is already unparsed. A candidate still being processed returns 409; retry once processing completes.