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Applicable to: Custodial Wallets (Web3 Wallets), MPC Wallets On some networks, after auto token sweeping, a small amount may remain in the deposit address. Common reasons include:
  • Minimum balance requirements: Some chains (such as XRP) require a minimum reserve balance. For example, an XRP address must keep at least 1 XRP, so 1 XRP may remain after sweeping.
  • L1 fee estimation differences for L2 sweeping: On L2 networks (such as Base), a sweep transaction includes L1 fees. Actual L1 fees may be lower than the estimated amount, leaving a remainder of estimated L1 fee - actual L1 fee.
  • Gas estimation differences on EVM networks: On EVM-compatible chains (such as Ethereum and BSC), gas fees are calculated using a maximum estimate (Gas Limit). If the actual gas used is lower, Gas Price * unused gas may remain in the deposit address.