Determines how to validate the JQL query and treat the validation results. Supported values: * strict Returns a 400 response code if any errors are found, along with a list of all errors (and warnings). * warn Returns all errors as warnings. * none No validation is performed. * trueDeprecated A legacy synonym for strict. * falseDeprecated A legacy synonym for warn. The default is strict. Note: If the JQL is not correctly formed a 400 response code is returned, regardless of the validateQuery value.