trace_be1a0059-2341-45ef-bcde-712b4198e113

# FiberTracebox Report

## Trace Summary

- Trace ID: trace_be1a0059-2341-45ef-bcde-712b4198e113
- Payment status: replayed
- Amount: 0 CKB
- Sender: fiber-rpc-node
- Receiver: fibt10001p6c...rdgdh9
- Mode: fiber-rpc
- Latency: 30ms
- Failure time: 30ms
- Failure stage: fiber_rpc_error
- Failure fingerprint: INVOICE_INVALID


## Root Cause

The receiver invoice could not be validated before payment execution.

## Live Fiber Evidence

- FNN node pubkey: 025cb868b35b602d1330597066a123e161ddd91bc556fe3c14b8e8a63caf1cb849
- FNN version: 0.9.0-rc5
- FNN channel count: 1
- FNN peers count: 0x2
- Failed RPC method: send_payment
- FNN error code: -32000
- Classified failure: INVOICE_INVALID
- Classification reason: FNN returned an invalid parameter/session error.
- FNN error message: InvalidParameter: Failed to validate payment request: "invoice is expired"

| channel id | state | enabled | local balance | remote balance | peer pubkey |
| --- | --- | --- | --- | --- | --- |
| 0x37bbbcd2bb99f9acef9af51604c94ea25ca9d4d85e415b3a404015a9ba44204a | ChannelReady | true | 0xe6868f0d00 (990,100,000,000 raw units) | 0x5f5e100 (100,000,000 raw units) | 02813acb2d49ec3f229051294b3eb901b4ba9b03d90b08a4cc19e49ba4f5bb76df |

### Graph Snapshot

- Graph snapshot attempted: yes
- Graph snapshot available: yes
- Graph node count: 0
- Graph channel count: 0
- Receiver present in graph: no
- Usable captured ChannelReady channels: 1
- Public captured channels: 0


## Evidence Source

- Trace source: fiber-rpc
- Replay mode: live evidence capture only; replay changes are not executed against FNN
- Live mutation: no
- RPC methods observed: node_info, list_channels, graph_nodes, graph_channels, send_payment
- Observed failure: not applicable
- Fiber RPC events come from configured FNN JSON-RPC calls.
- Dry-run mode requests route/payment checks without intentionally sending a new live payment.
- Replay-to-Fix remains analytical for live traces because alternate live attempts can move funds or mutate channels.

## Timeline

| ms | stage | severity | message |
| --- | --- | --- | --- |
| 0 | request_received | info | Live Fiber payment dry-run requested |
| 20 | node_info | success | Connected to Fiber Network Node RPC |
| 20 | channel_snapshot | success | Captured 1 live Fiber channels |
| 20 | graph_snapshot | success | Captured live Fiber graph snapshot |
| 30 | fiber_rpc_error | error | InvalidParameter: Failed to validate payment request: "invoice is expired" |

## Replay Results

| strategy | changed condition | result | latency ms | recommended |
| --- | --- | --- | --- | --- |
| same_conditions | Original amount, route, peer state, fee limit, timeout, and asset unchanged | failed | 37 | no |
| fresh_invoice | Requested a fresh receiver invoice before retry | success | 34 | yes |

## Smallest-Fix Recommendation

Request a fresh invoice: Request a fresh invoice from the receiver and retry with the new payment hash.

Validate invoice expiry, amount, asset, and payee fields before route discovery.

Confidence: high

## Suggested Next Actions

- Request a fresh invoice
- Validate invoice fields before route discovery
- Ensure sender and receiver agree on amount and asset
- Request a fresh invoice from the receiver and retry with the new payment hash.
- Validate invoice expiry, amount, asset, and payee fields before route discovery.

## Mode Disclosure

Fiber RPC mode: live FNN evidence is captured from node, channel, graph, invoice, and payment RPC calls. Replay-to-Fix remains analytical for live traces because changing live route conditions can move funds or mutate channels.