realm_alias_authority_mismatch· reason_code· applies to state_resolution, service_callAn ak.realm.alias declaration carried an alias whose <domain> is not an authority domain of this Realm's trust_domain, so the RealmCommit signature from the governance Station is not evidence that the domain's alias issuer authorized the claim. Domain reducers and directories MUST fail closed instead of registering a foreign-domain alias. See zh/discovery/object-addressing.md §3.3.