Transaction not yet indexed

AmUWBuyb3UnvGkqQQPbs4ZzYJ34QEgtBW4eFbprKWLsciwgXHMWWhb3ai8eEwFGozoS1sobRqUy4fKt1sDbcVoQ

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