LND Anchor Output Errors - Fix Reserve and CPFP Issues

What Are LND Anchor Output Errors?

Anchor outputs allow fee bumping via CPFP after commitment tx broadcast. Errors occur when anchor reserve is missing or CPFP fails.

Common Errors

• insufficient funds for anchor reserve
• anchor sweep failed: no utxos available
• cannot open channel: anchor reserve not met

Fix: Fund Anchor Reserve

# Check wallet balance
lncli walletbalance

# Need 10000 sats per open anchor channel
# Deposit on-chain to cover reserve + fees

Fix: Manual CPFP Fee Bump

# List pending sweeps
lncli pendingsweeps

# Bump fee
lncli bumpfee --sat_per_vbyte 20 <txid>:<output_index>

# Force bump if stuck
lncli bumpfee --sat_per_vbyte 50 --force <txid>:<output_index>

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