+def prepare_slice(api, xrn, users):
+ reg_objects = __get_registry_objects(slice_xrn, creds, users)
+ (hrn, type) = urn_to_hrn(slice_xrn)
+ slices = Slices(api)
+ peer = slices.get_peer(hrn)
+ sfa_peer = slices.get_sfa_peer(hrn)
+ registry = api.registries[api.hrn]
+ credential = api.getCredential()
+ (site_id, remote_site_id) = slices.verify_site(registry, credential, hrn, peer, sfa_peer, reg_objects)
+ slices.verify_slice(registry, credential, hrn, site_id, remote_site_id, peer, sfa_peer, reg_objects)
+