## Set Values **post** `/v1/customFields/setValues` Sets one or more custom fields on an instance of a Metronome entity. If a key/value pair passed in this request matches one already set on the entity, its value will be overwritten. Any key/value pairs that exist on the entity that do not match those passed in this request will remain untouched. This endpoint is transactional and will update all key/value pairs or no key/value pairs. Partial updates are not supported. There is a 200 character limit on custom field values.