Transaction not yet indexed

421QM4nTkSCz4XRCNqgd1QGqsn7GmBRYvVetDPFmKHgE2EHmSeu5WxPS2WNvJWTgK6gRtZvUCTsTHe3PCr7MFgoq

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