Transaction not yet indexed

AmSUNr57QmnWEYWLsjTaL8QRgTTCE2mhp3nqhgNeY8A2dhfeUvC1xhSDQcaLBMBoZ8wtijxaWPFqaiWMQJS6wMj

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