Transaction not yet indexed

HKgYCwfmoGQXqD7P4Dhex7xb9qDa9QUjfHthifB5i45iVumNU9bDKwcDNqmJyUrmLzdT1CvqpkZX1Yknj5isVF6

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