You have already used a free trial subscription. Duplicate t

Error message

You have already used a free trial subscription. Duplicate trial subscriptions are not supported.

What it means

In StartFreeTrial, returned when the cloud server responds with requestResult.Code == -2, the documented code for 'this account has already used a free trial subscription'. Conf.Language(298) resolves to 'You have already used a free trial subscription. Duplicate trial subscriptions are not supported.' This is a one-time-per-account business rule enforced server-side.

Source

Thrown at kernel/model/cloud_service.go:122

		return errors.New(Conf.Language(31))
	}

	requestResult := gulu.Ret.NewResult()
	request := httpclient.NewCloudRequest30s()
	resp, err := request.
		SetSuccessResult(requestResult).
		SetCookies(&http.Cookie{Name: "symphony", Value: Conf.GetUser().UserToken}).
		Post(util.GetCloudServer() + "/apis/siyuan/user/startFreeTrial")
	if err != nil {
		logging.LogErrorf("start free trial failed: %s", err)
		return ErrFailedToConnectCloudServer
	}
	if http.StatusOK != resp.StatusCode {
		logging.LogErrorf("start free trial failed: %d", resp.StatusCode)
		return ErrFailedToConnectCloudServer
	}
	if -2 == requestResult.Code { // 已经试用订阅过
		return errors.New(Conf.Language(298))
	}
	if 0 != requestResult.Code {
		return errors.New(requestResult.Msg)
	}
	return
}

func DeactivateUser() (err error) {
	requestResult := gulu.Ret.NewResult()
	request := httpclient.NewCloudRequest30s()
	resp, err := request.
		SetSuccessResult(requestResult).
		SetCookies(&http.Cookie{Name: "symphony", Value: Conf.GetUser().UserToken}).
		Post(util.GetCloudServer() + "/apis/siyuan/user/deactivate")
	if err != nil {
		logging.LogErrorf("deactivate user failed: %s", err)
		return ErrFailedToConnectCloudServer
	}

View on GitHub (pinned to 251596fc0d)

Solutions

Inform the user that the free trial is one-time-only and cannot be renewed.
Offer a paid subscription as the alternative path.
Use a fresh account only if a legitimate new trial is intended (not to circumvent the rule).

Example fix

// before
err := StartFreeTrial()
if err != nil { showGenericError(err) }

// after
err := StartFreeTrial()
if err != nil && strings.Contains(err.Error(), Conf.Language(298)) {
    showTrialAlreadyUsedHelp()
} else if err != nil { showError(err) }

Defensive patterns

Strategy: validation

Validate before calling

// Track prior trial use locally to avoid a redundant round trip
if userAlreadyTriedTrial() { showTrialAlreadyUsedHelp(); return }

Type guard

func isTrialAlreadyUsed(err error) bool {
    return err != nil && strings.Contains(err.Error(), model.Conf.Language(298))
}

Try / catch

if err := model.StartFreeTrial(); err != nil {
    if isTrialAlreadyUsed(err) { showUpgradePrompt() } else { showError(err) }
}

Prevention

Cache the 'trial used' state locally after the first -2 response to avoid repeat attempts.
Offer a paid subscription as the fallback when the trial was already consumed.
Do not attempt to bypass the one-trial-per-account rule with multiple logins.

When it happens

Trigger: The user already activated a free trial on this account in the past and attempts to start another. The server returns Code -2 specifically for this condition, distinct from other non-zero codes.

Common situations: User forgot they previously trialed; account shared across devices where trial was consumed elsewhere; testing environment reusing a real account that already trialed.

Related errors

AI-assisted analysis of siyuan-note/siyuan@251596fc0d (2026-08-12). Data as JSON: /api/errors/eb3d76fbcda9aef0. Report an issue: GitHub.