To help you report on and segment opportunities using the same lifecycle framework shown in Raiser's Edge NXT, the following field is now available on the GetOpportunity endpoint:
lifecycle_stage — The opportunity's current lifecycle stage, derived from the administrator-configured mapping between opportunity status and lifecycle stage. This field is read-only and returns one of the following values: Identification, Qualification, Cultivation, Solicitation, Negotiation, Stewardship, or Completed. Returns null if the opportunity's status isn't mapped to a lifecycle stage.