A sweep of 92 unconfirmed/dust sats failed with LND's debug-flavored
"insufficient input to create sweep tx: input_sum=0 BTC, output_sum=
0.00000092 BTC" — and the RPC sanitizer then masked even that behind
"Operation failed. Check server logs." (framework-pt, 2026-08-06).
The sweep mechanics are untouched (balance minus fee, as always) —
this only makes the refusal say WHY in plain language.
- lnd.sendcoins translates the sweep refusal: balance below Bitcoin's
dust minimum or not yet confirmed, so no transaction can be built
(LND's original message kept in parens).
- "Failed to send" joins the sanitizer's user-facing allowlist — the
same lesson as "Insufficient balance"/"Payment failed" before it.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
