Replay Lab
Failure replay, route comparison, and smallest-fix evidence.
Selected trace
trace_da028861-8c31-48cb-861f-9ef27e624851
Original failed payment
trace_da028861-8c31-48cb-861f-9ef27e624851
- Amount
- 160,000,000,000 CKB
- Failure time
- 45ms
- Sender
- fiber-rpc-node
- Receiver
- 0360779e54f1b2f380fe6889223ccf240c857bfebacd3c197a8d0124e9ab5d0484
ROUTE_CAPACITY_INSUFFICIENT
Route capacity insufficient
A route was discovered, but the available forwarding capacity was lower than the requested payment amount.
Failure Timeline
Lifecycle events captured in milliseconds.
- 0msrequest_receivedinfo
Live Fiber payment dry-run requested
- 35msnode_infosuccess
Connected to Fiber Network Node RPC
- 35mschannel_snapshotsuccess
Captured 1 live Fiber channels
- 35msgraph_snapshotsuccess
Captured live Fiber graph snapshot
- 45msfiber_rpc_errorerror
Send payment error: Failed to build route, Insufficient balance: max outbound liquidity 0 is insufficient, required amount: 160000000000
Generated Replay Scenarios
Selected from the failure fingerprint, not manually scripted in the UI.
Recommended fix
Smallest route-capacity fix
Replay showed the original 160000000000 CKB payment fails, 80% still fails, and 102400000000 CKB succeeds. Split payment and exact outbound capacity repair also succeeded.
Split the payment into two 80000000000 CKB parts, or reduce amount to 102400000000 CKB.
If the operator controls liquidity, add at least 57600000000 CKB outbound route capacity.
Original vs Replay
Original
Failed- Amount
- 160,000,000,000 CKB
- Latency
- 45ms
- Failed at
- fiber_rpc_error
Replay
success- What changed
- Split payment into 80000000000 CKB + 80000000000 CKB
- Latency
- 54ms
Replay Evidence
same_conditions
Original amount, route, peer state, fee limit, timeout, and asset unchanged
The original failure reproduces under the same conditions, confirming the fingerprint is stable.
reduced_amount_80
Reduced amount to 80%: 128000000000 CKB
128000000000 CKB still exceeds the constrained route capacity, so the payment fails again.
reduced_amount_64
Reduced amount to 64%: 102400000000 CKB
102400000000 CKB matches the observed maximum forwardable capacity and settles.
increased_outbound_capacity
Added exact outbound route capacity deficit: 57600000000 CKB
Adding 57600000000 CKB raises route capacity to the original payment amount and removes the constrained hop.
alternate_route
Selected alternate route excluding the failing condition
A route with different hops avoids the original failure point with slightly higher latency.
split_payment
Split payment into 80000000000 CKB + 80000000000 CKB
Splitting widens eligible paths and lowers per-route capacity pressure while preserving the original total amount.
Report Export
Export the failure timeline, replay evidence, recommendation, and mode disclosure.