Transaction not yet indexed

5Um9SU7AD2XmsU7jxkmfab3hQtXZgqWXdPNDfS1bf8fYQi6hEHtG3FhNZgESTr2eDtWKAjVuf5ANsfndkCb4ApL6

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