Transaction not yet indexed

Mdf5X5wUppEE68pZr6nw7WUMQCiZ1bbZYVQZFgBr8ZPByijPDfPgKfW4cKfYrvys1q91eGUPC4dPVxyqSJDb11H

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