Rebalancing failure MPP_TIMEOUT at my hop

Support and Troubleshooting
1

As I have never had a successful re-balancing with LNDg, I tried to do it manually via terminal.

Mostly, one of the hops does not have the required liquidity (1st line in the example output below).
But from time to time my own node seems to be to root cause with a MPP-TIMEOUT failure (2nd line).

+-------------------------------------+--------------+--------------+--------------+--------+----------+-------------------+-------------------------+
| HTLC_STATE                          | ATTEMPT_TIME | RESOLVE_TIME | RECEIVER_AMT | FEE    | TIMELOCK | CHAN_OUT          | ROUTE                   |
+-------------------------------------+--------------+--------------+--------------+--------+----------+-------------------+-------------------------+
| TEMPORARY_CHANNEL_FAILURE @ 3rd hop |        9.492 |       12.501 | 121582.031   | 80.997 |   810517 | 82xxxxxxxxxxxxxx3 | aaa->bbb->ccc->own      |
| MPP_TIMEOUT @ 5th hop               |        0.447 |      127.967 | 27343.75     | 14.966 |   810533 | 88xxxxxxxxxxxxxx1 | aaa->bbb->ccc->ddd->own |

Can someone explain the reason behind MPP_TIMEOUT and how to get rid of this failure.
Do I have to change my settings???

Many thanks in advance to all the experts here.

2

After 2 days of searching, I found the answer in the book “Mastering Lightning”, where this failure message is described as MultiPath Payment failure.
It seems that only one path with insufficient liquidity was found, but no further channels to get the full invoice amount.

1 Like
3

Interesting, thank you for sharing.