Transaction not yet indexed

21Nb2BUp3T8o1mNpJjjzyGraZwSWErtcYbKJLR93XzWf9sqDLXi8iVF4kPWpvCX6Vg1vUaMmDHTaVxRyAz57dpPr

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