Transaction not yet indexed

UUDPfAm51tsPhpU6S1dufMH5ZDLFRFWHEQUd6dFbvzVoMgeEfp9HMdBkcLYZiwZTZWeBuSQH6PEsUrPaEuniBKL

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