Transaction not yet indexed

WM6YhBBMrTXyt7Fyc39vyyqRGBvC5Vx3LXGWFEAJzr78BtnUMVsBVMSAsGvB5ZaNLXWeUwYN4atUxTK8E2MinRv

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