Transaction not yet indexed

mktM77kyKgLFsrS2NacZ53idu2inSVe5dgtKB2Nt8b7wp7APvT3f4Nhmrx9ht7jzKQJ7S4K9dEgprSrZgmc5ccQ

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