if tgt.Empty() {
			writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErrWithErr(ErrRemoteTargetNotFoundError, err), r.URL)
			return
		}
		for _, op := range ops {
			switch op {
			case madmin.CredentialsUpdateType:
				if !globalSiteReplicationSys.isEnabled() {
					// credentials update is possible only in bucket replication. User will never
					// know the site replicator creds.