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I get an error when scanning a QR code to sync, transfer or recover data.

Common Sync and Restore issues

Written by Advait

Troubleshooting QR Code Errors

If you are encountering an error message after scanning a QR code to sync, transfer, or recover your Delta portfolio, this guide will help you resolve the issue.

Note: If you have created a Delta Account (logging in via etoro), the QR code option will be intentionally hidden from your settings, as your account handles syncing automatically.

Here is a breakdown of the common QR code errors and how to fix them:

"Failed to sync/transfer!"

Please check that both of your devices have an active internet connection and try the process again. If it continues to fail, please contact our Support team.

"Migration token was already used"

Sync and transfer QR codes can only be scanned once. (Backup QR codes are the only exception to this rule). You will need to generate a new QR code on your original device and try again.

"Migration token expired"

For security reasons, sync and transfer QR codes expire exactly 10 minutes after they are generated. If your code has expired, simply create a new one and scan it immediately.

"Migration token is of the wrong type"

Delta uses different types of QR codes depending on whether you are syncing devices, transferring a portfolio, or restoring a backup. This error means you are mixing them up; please go back and ensure you select the correct action from the settings menu.

"Cannot migrate to the same user"

This error appears when you attempt to sync or transfer data to a device that is already actively synced to your portfolio.

"Migration token refers to a deleted user/device"

If you receive this specific error, please reach out directly to our Support team for further assistance.

"You reached the maximum of 2 or 5 synced devices"

To keep your data syncing smoothly, Delta limits the number of devices you can have connected at the same time. Delta Basic (free) users are limited to 2 devices, while Delta PRO and PRO+ users can sync up to 5 devices. To fix this, you must either remove an older device from your synced list or upgrade your subscription.

"Disallowing sync/transfer from a user which has 0 transactions"

This is a built-in safety measure. Delta prevents you from syncing or transferring data from an empty device. This stops users from accidentally wiping out their actual portfolio data by overwriting it with a blank screen. If you genuinely want to sync an empty device to another, you must first add at least one "dummy" transaction to bypass this lock.


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