Transaction not yet indexed

UNH2d3ScFfNumVsgQxoDXnodctR8thGxNkxvK14fjgp9m2JMd8CsW2j2mbi9dNq4eXVeGx9ycpSMGSTdA1Zc5ts

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