Transaction not yet indexed

s51cSW3FkPQ3VtTdF1MJfMAVKkPBKk9wdNxvitEKoqEJ7UJkMw2x1uJNf7raaEGj2f79Z1XwxKCGtpHbggMo5ke

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