Transaction not yet indexed

1236UXxnnYKcQbQjauxqYgDPbJ2kAJ9ghU321EjZ5V3cRJDzkRohLp3JrRi5Ffbgxj75XHeVG7nvuHSWw6eS9UmP

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