Transaction not yet indexed

518QTUiorcNNgjk277XcewjmRe9ku7R6wfuL4ZCuafZh8JQNQgNBkSqGf8aHvXU8DLvBTcGkjS4YEJ7APWqzS7GJ

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