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Stellar Lumens (XLM) "account merge" transfers are not supported
A Stellar Lumens (XLM) "account merge" transfers the native balance (the amount of XLM an account holds) to another account and removes the source account from the ledger.
Operations such as "account merge" are not considered as deposits. Merging XLM accounts to Kraken’s will result in your funds being unrecoverable.
We only support "Payment operation" for XLM deposits.