Some of my recent transactions are not confirmed and if I try to use a tool such as this or this, I get an error saying "Inconsistent subtangle" or "Cannot find tail" or "Inconsistent tips pair selected". What do these mean and how can I avoid them?

1 Answer 1


"Inconsistent subtangle" - transaction you want to promote is referencing an invalid transaction (or one that was confirmed in other reattachment). That means you have to use reattach.

"Cannot find tail" - not sure, maybe this node doesn't see this transaction or it isn't a tail (transaction with index 0 in the bundle)

"Inconsistent tips pair selected" - it's an error from the node when it can't find consistent tips. You can just try again.

  • 1
    Thanks for explaining this. It's worth mentioning that "Inconsistent subtangle" and "Inconsistent tips pair selected" was not resolved by reattaching multiple times.
    – user1654
    Feb 13, 2018 at 17:25

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