Transaction not yet indexed

1XS18wb6At3XwiR9hpG4gFirA2VqbuDubSdTKeK6XdxdsJUmL74rbLdYFwutBUYXn5R3VCbKK8tUTPQgnZ8cWZ6

The transaction signature is valid but not yet indexed by this RPC node, or the transaction failed before inclusion.