Transaction not yet indexed

QQ21ec1TKr9TMZV5YGeiBryEmqP6jvUMPWRYBPeHECKrsFBBwFqPFJcH8uFnrbhUtL263ypLwWQ3s7GEXWNptPR

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