Why do I need to unlock tokens?

Unlocking tokens authorizes the Balancer smart contract to move tokens from your wallet into the pool you want to join or execute a specific trade involving tokens in your wallet.

The token authorization is only needed once per token and is an inherent characteristic of the Ethereum Blockchain.

How do I unlock tokens?

Simply click the "approve" button and wait for the transaction to be confirmed as shown below (trade execution):

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