Most common errors

Transaction errors

If you encounter any of the following messages during a transfer or swap:

Error
An error occurred
Failed to send transaction
Insufficient funds
Unknown (UKWNAM9c)

It often means that your wallet doesn't have enough TON or Battery charge to cover the network fee. The required amounts for successful transactions are:

0.1 TON (~30 Battery charges) — to send tokens
0.3 TON (~90 Battery charges) — to swap TON or other tokens
0.1 TON (~10 Battery charges) — to send NFTs
150–350 Battery charges — to send USDT (TRC20)

Also, ensure you are using the latest version of Tonkeeper!

Emulation error

When we’re unable to emulate a transaction, you may encounter a notification like this:

This means that we are unable to display the transaction details (the amount, estimated network fee) and preliminary outcome. In most cases, this does not hinder the successful confirmation of the transaction on the blockchain, and you can sign the transaction. However, before doing so, please ensure that:

Your wallet has enough TON or Battery charges to cover the network fee.
You’re using the latest version of Tonkeeper.
The time on your device is accurate and synchronized with the internet.

Error 'Failed. Increase the slippage tolerance in the swap settings to avoid this error'

This error happens when the token price changes between when you create the transaction and when it’s executed. For example, the price may have unexpectedly gone up or down.

To fix this, increase the Slippage Tolerance. To do this, tap 'Swap', then click the settings icon in the top left corner and adjust the slippage percentage as needed.